digital holography thesis

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Dark-Field Digital Holographic Microscopy For Advanced Semiconductor Metrology

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• Atoms, Molecules, Lasers

Research output : PhD Thesis › PhD-Thesis - Research and graduation internal

• Dark-Field Digital Holographic Microscopy,
• Digital Holography,
• Microscopy,
• Scatterometry,
• Diffraction,
• Overlay Metrology,
• Computational Imaging,
• Fourier Transform,
• Lens Aberrations,
• Pupil Apodization

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• Dark-Field Digital Holographic Microscopy For Advanced Semiconductor Metrology Final published version, 31.2 MB
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• Dark-Field Digital Holographic Microscopy For Advanced Semiconductor Metrology - title_page Final published version, 102 KB

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• Fields Engineering 100%
• Semiconductor Engineering 100%
• Experimental Investigation Engineering 25%
• Holograms Engineering 25%
• Angular Frequency Engineering 25%
• Research Engineering 25%
• Application Engineering 25%
• Multiplexing Engineering 25%

T1 - Dark-Field Digital Holographic Microscopy For Advanced Semiconductor Metrology

AU - Messinis, Christos

PY - 2022/11/29

Y1 - 2022/11/29

N2 - The goal of this thesis is to investigate the potential use of dark-field Digital Holographic Microscopy for advanced semiconductor overlay metrology. We will present first overlay metrology results using a novel off-axis dark-field digital holographic microscopy concept that acquires multiple holograms in parallel by angular frequency multiplexing. The presented results show potential for significant improvement and that digital holographic microscopy is a promising technique for future overlay metrology tools. Theoretical analysis and experimental investigations will be presented to validate this potential and quantify to which extent it can be considered the future overlay metrology tool. This thesis also includes a brief introduction to semiconductor industry and the challenges of semiconductor metrology and clarifies the context of our research towards the use of holographic microscopy with an overview of holography and its application.

AB - The goal of this thesis is to investigate the potential use of dark-field Digital Holographic Microscopy for advanced semiconductor overlay metrology. We will present first overlay metrology results using a novel off-axis dark-field digital holographic microscopy concept that acquires multiple holograms in parallel by angular frequency multiplexing. The presented results show potential for significant improvement and that digital holographic microscopy is a promising technique for future overlay metrology tools. Theoretical analysis and experimental investigations will be presented to validate this potential and quantify to which extent it can be considered the future overlay metrology tool. This thesis also includes a brief introduction to semiconductor industry and the challenges of semiconductor metrology and clarifies the context of our research towards the use of holographic microscopy with an overview of holography and its application.

KW - Dark-Field Digital Holographic Microscopy,

KW - Digital Holography,

KW - Microscopy,

KW - Scatterometry,

KW - Diffraction,

KW - Overlay Metrology,

KW - Computational Imaging,

KW - Fourier Transform,

KW - Lens Aberrations,

KW - Pupil Apodization

M3 - PhD-Thesis - Research and graduation internal

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Article Contents

Introduction, digital holography, multidimensional imaging and various light-wave recording by dh, acknowledgements.

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Digital holography and its multidimensional imaging applications: a review

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Tatsuki Tahara, Xiangyu Quan, Reo Otani, Yasuhiro Takaki, Osamu Matoba, Digital holography and its multidimensional imaging applications: a review, Microscopy , Volume 67, Issue 2, April 2018, Pages 55–67, https://doi.org/10.1093/jmicro/dfy007

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In this review, we introduce digital holographic techniques and recent progress in multidimensional sensing by using digital holography. Digital holography is an interferometric imaging technique that does not require an imaging lens and can be used to perform simultaneous imaging of multidimensional information, such as three-dimensional structure, dynamics, quantitative phase, multiple wavelengths and polarization state of light. The technique can also obtain a holographic image of nonlinear light and a three-dimensional image of incoherent light with a single-shot exposure. The holographic recording ability of this technique has enabled a variety of applications.

Holography [ 1 – 4 ] is a technique used to record a wavefront diffracted from an object. Both amplitude and phase information of an object wave are recorded by utilizing the interference of light. A medium containing the information is called a ‘hologram’. A three-dimensional (3D) image can be reconstructed from a hologram by utilizing the theory of diffraction of light. Holography has been utilized as both a natural 3D display and a lensless 3D image recording technique. One of the most remarkable features of holography is that 3D motion-picture recording of any ultrafast physical phenomenon can be achieved with light-in-flight recording, even for light pulse propagation in 3D space [ 5 ].

In recent years, there have been rapid improvements in electronic devices such as image sensors, spatial light modulators (SLM) and computers. An SLM with high pixel density enables natural, colorful and high-quality lensless 3D motion-picture image formation on a holographic display [ 6 – 9 ]. A lensless image sensor with high pixel density and a large number of pixels can capture an image of fine interference fringes digitally, and a computer with high computational performance can then reconstruct a holographic image numerically with high throughput from a digitally recorded hologram. Digital holography (DH) [ 10 – 16 ] is a technique in which a digital hologram that contains an object wavefront is recorded, and both 3D and quantitative phase images of an object are reconstructed using a computer. This technique has potential application to the fields of microscopy [ 14 , 17 , 18 ], quantitative phase imaging (QPI) [ 14 , 17 , 19 ], particles and flow measurement in 3D space [ 20 ], 3D imaging of biological specimens [ 21 ], multiple 3D image encryption [ 22 ], 3D object recognition [ 23 ], 3D tomographic imaging of amplitude and phase distributions [ 24 ], 3D surface shape measurements with nanometer accuracy in the depth direction [ 25 ], ultrafast 3D optical imaging with an ultrashort pulsed laser [ 26 ], and holographic 3D imaging with a single photo detector [ 27 , 28 ].

There has been an increase in demand for sensing multidimensional information, such as 3D space, time, wavelength, state of polarization, refractive index and various light waves, including second harmonic generation (SHG), coherent anti-Stokes Raman scattering (CARS), stimulated Raman scattering (SRS), evanescent waves and natural light. Holography has the ability to record a multidimensional image and various light waves with a single-shot exposure of a lensless monochrome image sensor [ 29 ]. Until now, multidimensional imaging techniques based on DH have emerged in coordination with electronic devices and signal theory. As an example, the development and improvement of high-speed cameras and the application of digital signal processing help the technique to capture the 3D dynamics of multiple living micro-biological specimens simultaneously at a frame rate of more than 10 000 fps [ 30 ]. In this article, we review digital holographic techniques and recent multidimensional digital holographic imaging and various light-waves sensing applications.

DH [ 10 – 16 ] is an interferometric imaging technique. DH requires two waves to generate a hologram and to obtain amplitude as well as quantitative phase images simultaneously. The two waves are called an ‘object wave’ and a ‘reference wave’, respectively. Two types of representative configurations are generally adopted in DH: off-axis DH [ 11 ] and phase-shifting DH [ 31 , 32 ]. Figure 1 schematically shows these techniques. Two laser light waves are generated by dividing a laser beam with a beam splitter, and one laser light beam illuminates an object. The light diffracted from the object is the object wave, which illuminates an image sensor. The other light beam, serving as a reference wave, directly arrives at the image sensor. These waves interfere with each other, and an interference fringe image is formed on the image sensor plane. In Fig. 1 a, the optical axis directions of the two waves differ from each other. The incident angle difference between the two waves results in a fine fringe pattern, and the image sensor records a single off-axis hologram. In Fig. 1 b, two illumination waves come from the same direction and an image sensor records multiple in-line holograms by changing the phase of a reference wave with a phase modulator. Figure 2 schematically illustrates the image-reconstruction procedure of DH using the Fourier-transform method [ 11 ], which is frequently used for off-axis DH. A 2D Fourier transform (FT) localizes the object-wave information, and the large angle difference separates the object wave from unwanted image components of the hologram in the spatial frequency domain ν x − ν y . Due to the filtering in the spatial frequency domain, only the object-wave information is obtained. After the calculation of a 2D inverse FT (IFT), removal of the spatial carrier generated by tilting the reference wave, and calculation of diffraction integrals, focused intensity and quantitative phase images are obtained from a single hologram. A 2D fast Fourier transform (FFT) is used to accelerate the calculation, and methods to calculate diffraction integrals are described in [ 12 – 16 ]. Although spatial characteristics, such as field of view and resolution, are partially sacrificed to obtain intensity and phase images of an object from a hologram, single-shot holographic imaging can be achieved. Figure 3 shows an example of experimental results obtained from a single off-axis hologram. From a single hologram of polystyrene beads, whose diameters were 5 μm, transparent and phase images were retrieved as shown in Fig. 3 a and b, and the 3D rendering shown in Fig. 3 c was obtained from the phase image.

Schematic diagrams of (a) off-axis and (b) in-line digital holography systems with phase-shifting interferometry. Object and reference waves are generated from the same laser light source.

Image-reconstruction procedure in off-axis digital holography with the Fourier transform method.

(a) Intensity and (b) phase images of polystyrene beads whose diameters are 5 μm, which are obtained with a hologram at a wavelength of 532 nm. (c) 3D rendering image obtained from (b).

Figure 1 b shows multiple holograms with different phases sequentially recorded with a phase modulator, such as a piezo-driven mirror, an SLM, an acousto-optic modulator, or an electro-optic modulator. Based on phase-shifting interferometry [ 31 , 32 ], only the object-wave information is extracted with multiple phase-shifted holograms. After extraction, a holographic image of an object is obtained by calculating diffraction integral(s). Although recording of multiple holograms is required, the full space-bandwidth product of an image sensor can be utilized to record an object wave, and both a wide field of view and high resolution are obtained. To achieve high temporal resolution with phase-shifting interferometry, parallel phase-shifting DH, which uses space-division multiplexing of multiple phase-shifted holograms, was proposed by Awatsuji and Wyant around the same time [ 33 – 36 ]. By using a single-shot phase-shifting technique, a larger recordable space-bandwidth product is obtained in comparison to an off-axis configuration with the FT method [ 37 ].

The measurement speed is determined by the frame rate of the image sensor, the data transfer speed, and the calculation time for the image-reconstruction procedure. A modern high-speed camera has a frame rate of 1 Mfps, and such a camera has been used to perform digital holographic recording with a frame rate of 10 6 fps [ 38 ]. In contrast, the high calculation cost is a problem that should be solved. It takes much more time to compute the diffraction integral(s) with a commercially available computer because of the demanding calculation requirements for the 2D FFTs. Use of a graphics processing unit (GPU) and a field-programmable gate array (FPGA) are possible solutions to achieve holographic image reconstruction with extremely high throughput [ 39 , 40 ].

Quantitative phase imaging

DH obtains both amplitude and phase distributions of an object wave simultaneously and quantitatively. The application of DH to microscopy is called digital holographic microscopy (DHM). DHM is also called 3D microscopy [ 14 , 18 ] and quantitative phase microscopy [ 14 , 17 , 19 ]. QPI is an emerging field in 3D shape measurement, where it enables a high axial resolution on the scale of the light wavelength, and in biological imaging, where it is possible to visualize or quantify optical-path-length differences [ 14 , 17 , 19 ]. The path difference is a product of the physical thickness of an object in the axial direction and the difference in refractive index between the object and the surrounding medium. Figure 4 is an example of QPI for a HeLa cell, which is obtained with an off-axis digital holographic microscope that is described in Ref. [ 41 ]. As shown in Fig. 4 , a transparent cell was recorded and imaged without labeling. Cuche et al. , Takaki et al. [ 17 , 42 ], and several other research groups presented not only 3D intensity imaging but also QPI with DHM around the year 2000. Mann et al . [ 19 ] demonstrated label-free imaging of cells with high axial resolution. After that, they showed QPI with higher resolution and quantitative phase movies of cells [ 43 ]. Label-free imaging of cells has also been performed successfully by many researchers to observe dynamics and to achieve time-lapse imaging without staining [ 44 – 46 ]. Kemper and Gert [ 47 ] demonstrated QPI with DHM for living cells and Watanabe et al. [ 48 ] reported cancer cell identification without staining using QPI . Another aspect of DHM is that its measurement performance is strongly affected by vibrations, and the construction of apparatus insensitive to disturbances is an important research theme. A common-path interferometer is stable and is suitable for QPI with a high tolerance against vibrational disturbances. Popescu et al. [ 49 ] constructed a common-path setup with a grating and 4 f optical system and demonstrated its stability. Then, Lue et al. [ 50 ] presented another simple common-path DHM with Fresnel mirrors. QPI can be used in the fields of not only DH but also electron microscopy [ 51 ] and interference-less technique [ 52 ].

Phase image of a HeLa cell. Left : 2D phase image. Right : 3D surface plot of the phase image.

As a promising application of DHM, quantitative phase tomography has been actively researched [ 24 ]. A combination of DH and coherence tomography or diffraction tomography makes it possible to conduct complex-amplitude tomographic 3D imaging of an object such as a transparent material [ 24 , 53 – 58 ]. DHM has employed multidirectional illumination [ 24 , 55 , 58 ], low-coherence light [ 53 ], rotation of a specimen [ 54 , 56 ], or multiple wavelengths [ 57 ] and multiple recording of sub-holograms to conduct phase tomographic 3D imaging of a specimen. Multidirectional illumination and recording of sub-holograms has also been applied to achieve super-resolution complex amplitude imaging [ 59 – 61 ].

A quantitative phase image contains information about the optical thickness distribution of a specimen, where optical thickness means the product of physical thickness and refractive index. Therefore, it is difficult to separate physical thickness and refractive index by ordinary DH. However, simultaneous measurements of physical thickness and refractive index distributions have been performed by recording multiple phase images at multiple illumination angles [ 24 ], multiple viewing angles [ 54 ] or multiple wavelengths [ 62 ] or by using low-coherence light and mechanical scanning [ 63 ]. By utilizing a tomographic imaging technique, a 3D refractive index distribution has been visualized. Kim et al . [ 64 ] demonstrated tomographic imaging of the 3D refractive index distribution of cells with multiple illumination angles, and subsequently, Yoon et al . [ 65 ] applied this technique to the characterization of white blood cells. Chowdhury et al. [ 66 ] alternatively proposed quantitative phase tomography utilizing structured illumination to visualize depth-resolved 3D refractive index distributions.

Multiwavelength 3D imaging with holographic multiplexing

One of the particular features in holography is its ability to simultaneously record multidimensional object waves that contain intensity in 3D space, phase, wavelength and polarization information [ 29 ]. Multiwavelength object-wave information contains the wavelength dependencies of absorption, reflectance and refractive index. Thanks to the recording of complex amplitude information at multiple wavelengths, multiwavelength DH can be applied to not only color 3D imaging [ 67 ] but also dispersion imaging [ 68 ], 3D shape measurement with a wide depth range by using multiwavelength phase unwrapping [ 25 ], depth-resolved 3D imaging [ 53 ], simultaneous measurements of 3D morphology and refractive index distribution [ 62 ], and even tomographic 3D imaging of dispersion [ 69 ].

Wavelength information is obtained generally by using temporal [ 70 ] and spatial [ 71 ] divisions and space-division multiplexing [ 67 , 72 ]. However, holographic techniques make it possible to record multiwavelength/color information using a monochrome image sensor and to reconstruct it from wavelength-multiplexed image(s). Therefore, a wavelength filter is not required and multiwavelength information can be rapidly recorded without any color absorption. As a result, DH can realize multiwavelength 3D imaging with high light use efficiency. In holography, multiple wavelength information is obtained also by utilizing temporal frequency-division multiplexing (TFDM) [ 73 – 75 ], spatial frequency-division multiplexing (SFDM) [ 29 , 76 – 78 ] and phase-division multiplexing (PDM) [ 79 – 82 ]. Figure 5 illustrates the schematics of TFDM, SFDM and PDM. DH with TFDM records a series of wavelength-multiplexed holograms with a monochrome image sensor by changing the optical path of a reference arm. The periods of intensity changes at certain wavelengths are different from each other. A 1D FT is calculated for each pixel in the recorded images and wavelength information is separated in the temporal frequency domain. DH with TFDM has been used to perform not only 3D shape measurement with multiwavelength phase unwrapping [ 73 , 74 ] but also multicolor 3D imaging of incoherent light [ 75 ]. DH with SFDM generates different spatial carrier frequencies for respective wavelengths by using single or multiple reference beams. The spatial carrier frequency ν is sin θ / λ . Therefore, wavelength information can be separated in the spatial frequency domain by changing θ [ 29 , 77 , 78 ] for respective wavelengths or utilizing the difference of λ [ 76 ]. SFDM has the ability to record multiwavelength holographic images with a single-shot exposure at the expense of recordable spatial information, and therefore is suitable for observing dynamics in 3D scenes. 3D motion-picture imaging of micrometer-order movements of a mirror has been demonstrated [ 77 ] and high-speed color 3D motion-picture recording at 20 000 fps with a monochrome image sensor by using SFDM was reported [ 78 ]. SFDM was also applied to DHM to measure the dispersion distributions of cells with a single-shot exposure because multiwavelength DH can obtain quantitative phase images at multiple wavelengths [ 52 ]. Another suitable method to record multiwavelength object waves with high light efficiency is PDM [ 79 – 82 ]. Figure 5 c represents the principle of PDM. A monochrome image sensor records 2 N + 1 wavelength-multiplexed holograms sequentially while changing the phases of holograms at respective wavelengths with a phase modulator, such as a mirror with a piezo actuator or an SLM, where N denotes the number of wavelengths measured. Wavelength information is superimposed on space and spatial frequency domains, and is separated in the polar coordinate plane by introducing phase shifts, as in Fig. 5 c. From the recorded wavelength-multiplexed phase-shifted holograms, object waves at the respective wavelengths are separately obtained with the phase-shifting interferometry selectively extracting wavelength information [ 79 – 82 ] and without any FTs. PDM of multiple wavelengths was presented in 2013 initially [ 79 ], and then color 3D imaging by using PDM was experimentally demonstrated [ 80 ]. Multiwavelength imaging with holographic multiplexing (MIHOM) using 2 N wavelength-multiplexed phase-shifted holograms was proposed as a multiwavelength 3D imaging technique [ 81 ], which can be said as a computational coherent superposition scheme with 2 N wavelength-multiplexed intensities. The originally proposed scheme involved the 2 π ambiguity of the phase, but PDM with arbitrary and regular phase shifts was also proposed [ 82 ]. As an example of holographically multiplexed recording, we show three-wavelength digital holographic imaging with DHM based on PDM. A constructed multicolor in-line digital holographic microscope was based on PDM [ 82 ]. A preparation of stained mouse kidney cells was set as a specimen. Figure 6 shows the experimental results. The DHM obtained wavelength-multiplexed phase-shifted holograms and therefore conducted holographically multiplexed recording without a wavelength filter. As seen in Fig. 6 a–c, the image reconstructed by the PDM resembles the photograph, and the PDM obviously separates wavelength information from the recorded monochrome images. DHM based on PDM also successfully visualized an in-focus image of stained cell nuclei with 1 μm-order diameters shown in Fig. 6 d by calculating diffraction integrals.

Schematic diagrams of multiwavelength digital holography with (a) temporal frequency-division multiplexing (TFDM), (b) spatial frequency-division multiplexing (SFDM) and (c) phase-division multiplexing (PDM) of multiple wavelengths, respectively.

Experimental results. (a) Photograph of a specimen illuminated by three lasers. (b) In-line wavelength-multiplexed phase-shifted hologram. (c) Image reconstructed by the PDM on the image sensor plane. (d) Image obtained by the PDM and the calculation of diffraction integrals. Magnified image was focused at a depth of 8 mm from the image sensor plane. Scale bar in (a) is 20 μm.

3D imaging of incoherent light with DH

Ordinary DH uses a coherent light source such as a laser to record a hologram. This is because spatially and temporally coherent light is needed to generate an interference fringe image. However, in order to achieve 3D imaging for incoherent light such as fluorescence, spontaneous Raman scattering, or sun light, there is a lot of literature introducing incoherent holography and DH to realize 3D incoherent imaging with holography [ 83 ]. Basic configurations are often discussed with incoherent DH. Incoherent holography and DH frequently adopts common-path [ 83 – 90 ], Michelson [ 91 – 98 ], triangular [ 99 ], Mach-Zehnder [ 75 ] and optical scanning [ 100 – 102 ] interferometers to record incoherent hologram(s). Fluorescence 3D imaging with incoherent DH was initially performed in 1997 [ 100 ] after which image-quality improvements were shown by several groups [ 85 , 98 , 101 ]. As a common-path incoherent interferometer, Fresnel incoherent correlation holography (FINCH) [ 83 – 90 ] is an actively researched implementation. Rosen and Brooker [ 85 ] demonstrated 3D fluorescence imaging of particles with a 1 μm-order diameter by a FINCH system, and subsequently, Abe and Hayasaki [ 98 ] performed 3D mapping of multiple fluorescence nanoparticles having diameters of 500 nm with a Michelson interferometer. Kim [ 94 ] proposed a multicolor natural light holographic camera and captured an image of a 3D scene. It is noted that, in a self-reference interferometer using two object waves to obtain an incoherent hologram, the Lagrange invariant is violated [ 103 ]. This means that the product of magnification M and the maximum angle of a reconstructed object wave θ max is larger than that of an ordinary coherent imaging system. The magnification of FINCH is higher than that of an ordinary incoherent imaging system while the angle θ max in the system is the same as that in a coherent imaging system. As a result, super-resolution imaging can be performed. The difference between FINCH and the initially presented common-path incoherent holography [ 83 ] is the uses of an SLM and digital signal processing. The SLM generates two waves with different radii of curvature from an incoherent object wave to obtain an incoherent hologram. Incoherent DH including FINCH frequently adopts in-line phase-shifting interferometry because of the short coherence length of incoherent light and high-quality 3D imaging with a large space-bandwidth product. However, phase-shifting interferometry generally requires multiple exposures and loses temporal resolution.

To realize single-shot incoherent 3D imaging with DH, incoherent DH setups with off-axis configurations [ 88 , 95 , 104 ] and single-shot phase-shifting interferometry [ 105 , 106 ] have been proposed. In off-axis incoherent DH, Kelner and Rosen proposed a single-path FINCH system [ 88 ]. Hong and Kim [ 95 ] demonstrated single-shot incoherent 3D imaging with a Michelson interferometer. Quan et al. [ 104 ] introduced a method to realize common-path, stable, single-shot and incoherent DHM using a dual-focus lens and gratings. In single-shot in-line incoherent DH, incoherent DH and single-shot phase-shifting interferometry were successfully combined. Single-shot, common-path, in-line phase-shifting incoherent DH was presented to realize single-shot lensless 3D imaging of natural light with high temporal resolution [ 105 , 106 ]. Figure 7 shows the results obtained by Quan’s system, which is described in Ref. [ 104 ]. A single incoherent hologram of two pinholes with 10 μm diameters, which were placed at different depths, was recorded and the respective focused images were reconstructed successfully.

Reconstructed images of two pinholes serving as point sources. These pinholes are placed at different depths. (a) The reconstructed images of point sources in the upper and lower sides. (b) Peak intensity obtained by calculating multiple diffraction integrals at multiple reconstruction distances and applying Gauss fitting. The depth information of each pinhole is derived from each peak intensity obtained after Gauss fitting. The depth positions of the magnified images of the pinholes were derived as 620 and 1190 mm, respectively.

As a method different from FINCH, a remarkable single-path incoherent DH method called coded aperture correlation holography (COACH) was recently proposed [ 107 ]. In COACH, coded phase-modulation (CPM) distributions are displayed on an SLM and point spread functions (PSFs) of CPMs at respective depths are measured in advance. After that, incoherent light in 3D space is recorded, and correlations between PSFs and recorded images are calculated. As a result, a 3D image of incoherent light is reconstructed without calculating diffraction integrals, while the Lagrange invariant is not violated. With COACH, incoherent 3D imaging [ 107 ], incoherent color 3D imaging [ 108 ], 3D imaging of a scattering object without interference [ 109 ] and single-shot COACH [ 110 ] have been demonstrated.

Other multidimensional imaging and special techniques in DH

DH has the ability to perform multiplexed recording of not only multiple wavelengths but also the polarization of a light wave and multiple object waves. The polarization of light is also an important physical parameter obtained by light wave recording. The polarization distribution of a 3D object can be recorded by sensing two object waves polarized in orthogonal directions and is obtained with SFDM [ 29 , 111 , 112 ], temporal division [ 113 ] and space-division multiplexing [ 114 ]. By using polarization-imaging DH, birefringent materials such as polarization optical elements [ 112 ] and biological polymers [ 114 ] were observed without staining. By recording multiple object waves, multiple physical information is simultaneously acquired. Object waves that reflected and transmitted a specimen were simultaneously captured with a single CCD image sensor. These waves were successfully and separately reconstructed and holographic reflection and transmission images were simultaneously visualized [ 115 ]. Multiplexed recording of multiple object waves were also applied to multiple 3D image encryption/decryption [ 116 ].

DH can be applied to not only multidimensional sensing but also holographic recording of various light waves such as nonlinear holographic 3D imaging. Nonlinear coherent light such as SHG, CARS and SRS waves can be recorded as a hologram by modulating not only an object wave but also a reference wave. Holographic imaging of nonlinear coherent light such as SHG [ 117 , 118 ], CARS [ 119 ], SRS [ 120 ] and evanescent waves [ 121 ] has been performed. Holographic SHG imaging was used to visualize the 3D distribution of collagen in mouse tail dermis and epidermis [ 118 ]. CARS holography acquired a 3D image of polymeric beads with a single-shot exposure and no staining [ 119 ]. Time-resolved imaging of methane gas and its pressure were demonstrated with SRS holography [ 120 ]. Holographic imaging of evanescent waves was used to perform complex amplitude imaging of transparent objects such as water droplets and fused quartz plano-convex lens [ 121 ].

DH also has the ability to simultaneously record an interference fringe image and incoherent light, such as fluorescence and phosphorescence light [ 122 , 123 ]. Fluorescence imaging in biology has proven valuable in detecting certain cells or cell components. In order to understand cell activities thoroughly, simultaneous detection of fluorescence and phase information from the same measuring object is desired. Several research groups have proposed single-shot implementations to record fluorescence light and quantitative phase images simultaneously [ 41 , 122 , 123 ]. Quan et al . [ 41 ] constructed a multimodal microscope that combines a conventional epifluorescence microscope and an off-axis digital holographic microscope. Figure 8 is a schematic diagram of multimodal DHM (MDHM), which is an implementation with two recording devices for recording a hologram and fluorescence light respectively. MDHM provides QPI and 2D fluorescence imaging. Recording device 1 in Fig. 8 only captures fluorescence light and recording device 2 only obtains an off-axis hologram. The recording devices are controlled by a computer for synchronization. Figure 9 is an example of a mouse brain slice recorded at the same time. From the 2D fluorescence image, neurons that expressed GFP were clearly imaged in Fig. 9 a, while the boundary of white matter and grey matter was vague in the same image. From phase images in Fig. 9 b and c, the boundaries were clearly imaged, as the white matter appeared darker due to the phase delay caused by the higher refractive index of lipid, compared to the surroundings of cells which are mainly composed of water.

A schematic diagram of multimodal digital holographic microscopy, which is an implementation for recording a hologram and fluorescence light simultaneously. The left part of the system is a conventional epifluorescence microscope, and the right part is off-axis DHM for QPI.

Part of a mouse brain slice measured in fluorescence and phase. (a) 2D fluorescence imaging of neurons. (b) 3D surface plot of phase. (c) Phase image in 2D, the boundaries between white and grey matters are indicated in dashed lines with arrows.

Image recovery for a defocused incoherent object image enables simultaneous 3D imaging of coherent and incoherent light without interference. The first method is to utilize PSF at each depth for the calculation of deconvolution [ 124 , 125 ]. Second is COACH [ 107 – 110 ]. Structured illumination with multiple recording [ 126 ] and scanning in the depth direction [ 127 ] are also effective methods to visualize 3D images of coherent and incoherent light simultaneously. In particular, in Ref. [ 126 ], simultaneous depth-resolved 3D imaging of quantitative phase and fluorescence was performed by using structured illumination. Alternatively, a method of utilizing depth information obtained by DH was recently proposed by Quan et al. [ 128 ]. The method adopts MDHM and performs appropriate phase-compensation of the fluorescence image and numerical calculations of diffraction integrals with the obtained depth information in free space. Figure 10 shows an example of the recovery of defocused fluorescence images to demonstrate the simultaneous 3D imaging of coherent and incoherent light. Microbeads were immersed in water and freely moved. Figure 10 a and b shows simultaneous recording of a 2D fluorescence image and a hologram by MDHM, respectively. As shown in Fig. 10 c, the defocused fluorescence bead was successfully recovered. Phase images were also reconstructed as shown in Fig. 10 d. From the results, both 3D fluorescence and phase imaging were realized.

Experimental results of obtaining a 3D fluorescence image from defocused one. (a) Recorded fluorescence image, (b) hologram, (c) fluorescence images recovered from (a) by the method of Ref. [ 128 ] and (d) reconstructed phase images.

In this review, we introduced digital holographic techniques, multidimensional imaging and its applications in holography, and recent progress in DH. DH has contributed to imaging science by performing quantitative phase, 3D intensity, motion picture and time-lapse imaging. DH can be applied to multidimensional imaging, complex amplitude 3D tomography, nonlinear holographic sensing and incoherent 3D imaging. Natural light, including fluorescence and spontaneous Raman scattering light can be recorded as a hologram, and lensless multicolor 3D motion-picture recording of incoherent light can be enabled by exploiting holographic techniques and improvements of electronic devices. DH with multidimensional imaging systems will extend the imaging ability to label-free living cells, transparent materials and dynamically changing phenomena.

Japan Science and Technology Agency (JST), PRESTO (Grant number JPMJPR16P8), Japan; Konica Minolta Science and Technology Foundation; Research Foundation for Opt-Science and Technology; The Nakajima Foundation; JSPS KAKENHI under (Grants 15H03580 and 16J05689), Japan.

We appreciate Ms. Kris Cutsail for checking the grammar of this article. One of the authors (T.T.) sincerely thanks Shu Tahara for encouragement.

Gabor D ( 1948 ) A new microscopic principle . Nature 161 : 777 – 778 .

Google Scholar

Leith E N , and Upatnieks J ( 1962 ) Reconstructed wavefronts and communication theory . J. Opt. Soc. Am. 52 : 1123 – 1130 .

Hariharan P ( 1996 ) Optical Holography: Principles, Techniques and Applications , ( Cambridge University Press , New York ).

Google Preview

Kubota T ( 2014 ) 48 years with holography . Opt. Rev. 21 : 883 – 892 .

Kubota T , Komai K , Yamagiwa M , and Awatsuji Y ( 2007 ) Moving picture recording and observation of three-dimensional image of femtosecond light pulse propagation . Opt. Express 15 : 14348 – 14354 .

Takaki Y , and Okada N ( 2009 ) Hologram generation by horizontal scanning of a high-speed spatial light modulator . Appl. Opt. 48 : 3255 – 3260 .

Takaki Y , Matsumoto Y , and Nakajima T ( 2015 ) Color image generation for screen-scanning holographic display . Opt. Express 23 : 26986 – 26998 .

Ito T , Shimobaba T , Godo H , and Horiuchi M ( 2002 ) Holographic reconstruction with a 10-μm pixel-pitch reflective liquid-crystal display by use of a light-emitting diode reference light . Opt. Lett. 27 : 1406 – 1408 .

Yamaguchi T , and Yoshikawa H ( 2011 ) Computer-generated image hologram . Chin. Opt. Lett. 9 : 120006 .

Goodman J W , and Lawrence R W ( 1967 ) Digital image formation from electronically detected holograms . Appl. Phys. Lett. 11 : 77 – 79 .

Takeda M , Ina H , and Kobayashi S ( 1982 ) Fourier-transform method of fringe-pattern analysis for computer-based topography and interferometry . J. Opt. Soc. Am. 72 : 156 – 160 .

Schnars U , and Jüeptner W ( 2005 ) Digital Holography , ( Springer , Berlin Heidelberg ).

Kreis T ( 2006 ) Handbook of Holographic Interferometry: Optical and Digital Methods , ( John Wiley & Sons, Weinheim ).

Kim M K ( 2011 ) Digital Holographic Microscopy: Principles, Techniques, and Applications , ( Springer , New York ).

Picart P , and Li J-C ( 2013 ) Digital Holography , ( Wiley , Hoboken ).

Poon T C , and Liu J P ( 2014 ) Introduction to Modern Digital Holography with MATLAB , ( Cambridge University Press , New York ).

Cuche E , Bevilacqua R , and Depeursinge C ( 1999 ) Digital holography for quantitative phase contrast imaging . Opt. Lett. 24 : 291 – 293 .

Takaki Y , Kawai H , and Ohzu H ( 1999 ) Hybrid holographic microscopy free of conjugate and zero-order images . Appl. Opt. 38 : 4990 – 4996 .

Mann C J , Yu L , Lo C M , and Kim M K ( 2005 ) High-resolution quantitative phase-contrast microscopy by digital holography . Opt. Express 13 : 8693 – 8698 .

Murata S , and Yasuda N ( 2000 ) Potential of digital holography in particle measurement . Opt. Laser Technol. 32 : 567 – 574 .

Xu W , Jericho M H , Meinertzhagen I A , and Kreuzer H J ( 2001 ) Digital in-line holography for biological applications . Proc. Natl. Acad. Sci. 98 : 11301 – 11305 .

Alfalou A , and Brosseau C ( 2009 ) Optical image compression and encryption methods . Adv. Opt. Photon. 1 : 589 – 636 .

Javidi B , and Tajahuerce E ( 2000 ) Three-dimensional object recognition by use of digital holography . Opt. Lett. 25 : 610 – 612 .

Noda T , Kawata S , and Minami S ( 1992 ) Three-dimensional phase-contrast imaging by a computed-tomography microscope . Appl. Opt. 31 : 670 – 674 .

Gass J , Dakoff A , and Kim M K ( 2003 ) Phase imaging without 2π ambiguity by multiwavelength digital holography . Opt. Lett. 28 : 1141 – 1143 .

Takeda M , and Kitoh M ( 1992 ) Spatiotemporal frequency multiplex heterodyne interferometry . J. Opt. Soc. Am. A 9 : 1607 – 1614 .

Clemente P , Durán V , Tajahuerce E , Torres-Company V , and Lancis J ( 2012 ) Single-pixel digital ghost holography . Phys. Rev. A 86 : 041803 .

Clemente P , Durán V , Tajahuerce E , Andrés P , Climent V , and Lancis J ( 2013 ) Compressive holography with a single-pixel detector . Opt. Lett. 38 : 2524 – 2527 .

Lohmann A W ( 1965 ) Reconstruction of vectorial wavefronts . Appl. Opt. 4 : 1667 – 1668 .

Tahara T , Yonesaka R , Yamamoto S , Kakue T , Xia P , Awatsuji Y , Nishio K , Ura S , Kubota T , and Matoba O ( 2012 ) High-speed three-dimensional microscope for dynamically moving biological objects based on parallel phase-shifting digital holographic microscopy . IEEE J. Sel. Topics Quantum Electron. 18 : 1387 – 1393 .

Bruning J H , Herriott D R , Gallagher J E , Rosenfeld D P , White A D , and Brangaccio D J ( 1974 ) Digital wavefront measuring interferometer for testing optical surfaces and lenses . Appl. Opt. 13 : 2693 – 2703 .

Yamaguchi I , and Zhang T ( 1997 ) Phase-shifting digital holography . Opt. Lett. 22 : 1268 – 1270 .

Wyant J C ( 2003 ) Dynamic interferometry . Opt. Photon. News 14 : 36 – 41 .

Sasada M , Fujii A , Awatsuji Y , and Kubota T ( 2004 ) Parallel quasi-phase-shifting digital holography implemented by simple optical set up and effective use of image-sensor pixels. Technical Digest of the 2004 ICO International Conference: Optics and Photonics in Technology Frontier (International Commission for Optics) , pp 357–358.

Millerd J , Brock N , Hayes J , Morris M N , Novak M , and Wyant J ( 2004 ) Pixelated phase-mask dynamic interferometer . Proc. SPIE 5531 : 304 .

Awatsuji Y , Sasada M , and Kubota T ( 2004 ) Parallel quasi-phase-shifting digital holography . Appl. Phys. Lett. 85 : 1069 – 1071 .

Tahara T , Awatsuji Y , Nishio K , Ura S , Kubota T , and Matoba O ( 2010 ) Comparative analysis and quantitative evaluation of the field of view and viewing zone of single-shot phase-shifting digital holography using space-division multiplexing . Opt. Rev. 17 : 519 – 524 .

Xia P , Awatsuji Y , Nishio K , and Matoba O ( 2014 ) One million fps digital holography . Electron. Lett. 50 : 1693 – 1695 .

Shimobaba T , Sato Y , Miura J , Takenouchi M , and Ito T ( 2008 ) Real-time digital holographic microscopy using the graphic processing unit . Opt. Express 16 : 11776 – 11781 .

Shimobaba T , Kakue T , and Ito T ( 2016 ) Review of fast algorithms and hardware implementations on computer holography . IEEE Trans. Ind. Inform. 12 : 1611 – 1622 .

Quan X , Nitta K , Matoba O , Xia P , and Awatsuji Y ( 2015 ) Phase and fluorescence imaging by combination of digital holographic microscopy and fluorescence microscopy . Opt. Rev. 22 : 349 .

Takaki Y , and Ohzu H ( 2000 ) Hybrid holographic microscopy: visualization of three-dimensional object information by use of viewing angles . Appl. Opt. 39 : 5302 – 5308 .

Mann C J , Yu L , and Kim M K ( 2006 ) Movies of cellular and sub-cellular motion by digital holographic microscopy . Biomed. Eng. OnLine 5 : 21 .

Jourdain P , Pavillon N , Moratal C , Boss D , Rappaz B , Depeursinge C , Marquet P , and Magistretti P J ( 2011 ) Determination of transmembrane water fluxes in neurons elicited by glutamate lonotropic receptors and by the contransporters KCC2 and NKCC1: a digital holographic microscopy study . J. Neurosci. 31 : 11846 – 11854 .

Pavillon N , Kühn J , Moratal C , Jourdain P , Depeursinge C , Magistretti P J , and Marquet P ( 2012 ) Early cell death detection with digital holographic microscopy . PLoS One 7 : 0030912 .

Miniotis M F , Mukwaya A , and Wingren A G ( 2014 ) Digital holographic microscopy for non-invasive monitoring of cell cycle arrest in L929 cells . PLoS One 9 : 0106546 .

Kemper B , and Gert B ( 2008 ) Digital holographic microscopy for live cell applications and technical inspection . Appl. Opt. 47 : A52 – A61 .

Watanabe E , Hoshiba T , and Javidi B ( 2013 ) High-precision microscopic phase imaging without phase unwrapping for cancer cell identification . Opt. Lett. 38 : 1319 – 1321 .

Popescu G , Ikeda T , Dasari R R , and Feld M S ( 2006 ) Diffraction phase microscopy for quantifying cell structure and dynamics . Opt. Lett. 31 : 775 – 777 .

Lue N , Kang J W , Hillman T R , Dasari R R , and Yaqoob Z ( 2012 ) Single-shot quantitative dispersion phase microscopy . Appl. Phys. Lett. 101 : 084101 .

Bajt S , Barty A , Nugent K A , McCartney M , Wall M , and Oaganin D ( 2000 ) Quantitative phase-sensitive imaging in a transmission electron microscope . Ultramicroscopy 83 : 67 – 73 .

Zhang F , Pedrini G , and Osten W ( 2007 ) Phase retrieval of arbitrary complex-valued fields through aperture-plane modulation . Phys. Rev. A 75 : 043805 .

Kim M K ( 1999 ) Wavelength-scanning digital interference holography for optical section imaging . Opt. Lett. 24 : 1963 – 1965 .

Charrière F , Marian A , Montfort F , Kuhn J , Colomb T , Cuche E , Marquet P , and Depeursinge C ( 2006 ) Cell refractive index tomography by digital holographic microscopy . Opt. Lett. 31 : 178 – 180 .

Choi W , Fang-Yen C , Badizadegan K , Oh S , Lue N , Dasari R R , and Feld M S ( 2007 ) Tomographic phase microscopy . Nat. Method 4 : 717 – 719 .

Kozacki T , Krajewski R , and Kujawińska M ( 2009 ) Reconstruction of refractive-index distribution in off-axis digital holography optical diffraction tomographic system . Opt. Express 17 : 13758 – 13767 .

Kim T , Zhou R , Mir M , Babacan S D , Carney P S , Gooddard L L , and Popescu G ( 2014 ) White-light diffraction tomography of unlabelled live cells . Nat. Photon. 8 : 256 – 263 .

Jin D , Zhou R , Yaqoob Z , and So P T C ( 2017 ) Tomographic phase microscopy: principles and applications in bioimaging . J. Opt. Soc. Am. B 34 : B64 – B77 .

Mico V , Zalevsky Z , García-Martínez P , and García J ( 2006 ) Synthetic aperture superresolution with multiple off-axis holograms . J. Opt. Soc. Am. A 23 : 3162 – 3170 .

Mico V , Zalevsky Z , Ferreira C , and García J ( 2008 ) Superresolution digital holographic microscopy for three-dimensional samples . Opt. Express 16 : 19260 – 19270 .

Cotte Y , Toy F , Jourdain P , Pavillon N , Boss D , Magistretti P , Marquet P , and Depeursinge C ( 2013 ) Marker-free phase nanoscopy . Nat. Photon. 7 : 113 – 117 .

Rappaz B , Charrière F , Colomb T , Deperursinge C , Magistretti P J , and Marquet P ( 2008 ) Simultaneous cell morphometry and refractive index measurement with dual-wavelength digital holographic microscopy and dye-enhanced dispersion of perfusion medium . Opt. Lett. 33 : 744 – 746 .

Yamauchi T , Iwai H , Miwa M , and Yamashita Y ( 2008 ) Low-coherent quantitative phase microscope for nanometer-scale measurement of living cells morphology . Opt. Express 16 : 12227 – 12238 .

Kim K , Yaqoob Z , Lee K , Kang J W , Choi Y , Hosseini P , So P T C , and Park Y ( 2014 ) Diffraction optical tomography using a quantitative phase imaging unit . Opt. Lett. 39 : 6935 – 6938 .

Yoon J , Kim K , Park H , Choi C , Jang S , and Park Y ( 2015 ) Label-free characterization of white blood cells by measuring 3D refractive index maps . Opt. Express 6 : 3865 – 3875 .

Chowdhury S , Eldridge W J , Wax A , and Izatt J ( 2017 ) Refractive index tomography with structured illumination . Optica 4 : 537 – 545 .

Yamaguchi I , Matsumura T , and Kato J ( 2002 ) Phase-shifting color digital holography . Opt. Lett. 27 : 1108 – 1110 .

Yang C , Wax A , Georgakoudi I , Hanlon E B , Badizadegan K , Dasari R R , and Feld M S ( 2000 ) Interferometric phase-dispersion microscopy . Opt. Lett. 25 : 1526 – 1528 .

Jung J , Kim K , Yoon K , and Park Y ( 2016 ) Hyperspectral optical diffraction tomography . Opt. Express 24 : 2006 – 2012 .

Javidi B , Ferraro P , Hong S H , Nicola S , Finizio A , Alfieri D , and Pierattini G ( 2005 ) Three-dimensional image fusion by use of multiwavelength digital holography . Opt. Lett. 30 : 144 – 146 .

Desse J M , Picart P , and Tankam P ( 2011 ) Sensor influence in digital 3 λ holographic interferometry . Meas. Sci. Technol. 22 : 064005-1-7 .

Bayer B E ( 1976 ) Color imaging array. US Patent 3971065.

Dändliker R , Thalmann R , and Prongué D ( 1988 ) Two-wavelength laser interferometry using superheterodyne detection . Opt. Lett. 13 : 339 – 341 .

Barada D , Kiire T , Sugisaka J , Kawata S , and Yatagai T ( 2011 ) Simultaneous two-wavelength Doppler phase-shifting digital holography . Appl. Opt. 50 : H237 – H244 .

Naik D N , Pedrini G , Takeda M , and Osten W ( 2014 ) Spectrally resolved incoherent holography: 3D spatial and spectral imaging using a Mach-Zehnder radial-shearing interferometer . Opt. Lett. 39 : 1857 – 1860 .

Onodera R , and Ishii Y ( 1998 ) Two-wavelength interferometry that uses a Fourier-transform method . Appl. Opt. 37 : 7988 – 7994 .

Kühn J , Colomb T , Montfort F , Charrière F , Emery Y , Cuche E , Marquet P , and Depeursinge C ( 2007 ) Real-time dual-wavelength digital holographic microscopy with a single hologram acquisition . Opt. Express 15 : 7231 – 7242 .

Tahara T , Ito Y , Lee Y , Xia P , Inoue J , Awatsuji Y , Nishio K , Ura S , Kubota T , and Matoba O ( 2013 ) Multiwavelength parallel phase-shifting digital holography using angular multiplexing . Opt. Lett. 38 : 2789 – 2791 .

Tahara T , Kikunaga S , Arai Y , and Takaki Y ( 2013 ) Phase-shifting interferometry capable of selectively extracting multiple wavelength information and color three-dimensional imaging using a monochromatic image sensor. In: Proceedings of Optics and Photonics Japan 2013 (OPJ) , 13aE9 (in Japanese).

Tahara T , Mori R , Kikunaga S , Arai Y , and Takaki Y ( 2015 ) Dual-wavelength phase-shifting digital holography selectively extracting wavelength information from wavelength-multiplexed holograms . Opt. Lett. 40 : 2810 – 2813 .

Tahara T , Mori R , Arai Y , and Takaki Y ( 2015 ) Four-step phase-shifting digital holography simultaneously sensing dual-wavelength information using a monochromatic image sensor . J. Opt. 17 : 125707-1-10 .

Tahara T , Otani R , Omae K , Gotohda T , Arai Y , and Takaki Y ( 2017 ) Multiwavelength digital holography with wavelength-multiplexed holograms and arbitrary symmetric phase shifts . Opt. Express 25 : 11157 – 11172 .

Lohmann A W ( 1965 ) Wavefront reconstruction for incoherent objects . J. Opt. Soc. Am. 55 : 1555 – 1556 .

Sirat G , and Psaltis D ( 1985 ) Conoscopic holography . Opt. Lett. 10 : 4 – 6 .

Rosen J , and Brooker G ( 2008 ) Non-scanning motionless fluorescence three-dimensional holographic microscopy . Nat. Photon. 2 : 190 – 195 .

Rosen J , Brooker G , Indebetouw G , and Shaked N T ( 2009 ) A review of incoherent digital Fresnel holography . J. Holography Speckle 5 : 1 – 17 .

Brooker G , Siegel N , Wang V , and Rosen J ( 2011 ) Optimal resolution in Fresnel incoherent correlation holographic fluorescence microscopy . Opt. Express 19 : 5047 – 5062 .

Kelner R , and Rosen J ( 2012 ) Spatially incoherent single channel digital Fourier holography . Opt. Lett. 37 : 3723 – 3725 .

Brooker G , Siegel N , Rosen J , Hashimoto N , Kurihara M , and Tanabe A ( 2013 ) In-line FINCH super resolution digital holographic fluorescence microscopy using a high efficiency transmission liquid crystal GRIN lens . Opt. Lett. 38 : 5264 – 5267 .

Siegel N , Lupashin V , Storrie B , and Brooker G ( 2016 ) High-magnification super-resolution FINCH microscopy using birefringent crystal lens interferometers . Nat. Photon. 10 : 802 – 808 .

Lohmann A , and Bryngdahl O ( 1968 ) One-dimensional holography with spatially incoherent light . J. Opt. Soc. Am. 58 : 625 – 628 .

Itoh K , Inoue T , Yoshida T , and Ichioka Y ( 1990 ) Interferometric supermultispectral imaging . Appl. Opt. 29 : 1625 – 1630 .

Yoshimori K ( 2001 ) Interferometric spectral imaging for three-dimensional objects illuminated by a natural light source . J. Opt. Soc. Am. A 18 : 765 – 770 .

Kim M K ( 2013 ) Full color natural light holographic camera . Opt. Express 21 : 9636 – 9642 .

Hong J , and Kim M K ( 2013 ) Single-shot self-interference incoherent digital holography using off-axis configuration . Opt. Lett. 38 : 5196 – 5199 .

Watanabe K , and Nomura T ( 2015 ) Recording spatially incoherent Fourier hologram using dual channel rotational shearing interferometer . Appl. Opt. 54 : A18 – A22 .

Yanagawa T , Abe R , and Hayasaki Y ( 2015 ) Three-dimensional mapping of fluorescent nanoparticles using incoherent digital holography . Opt. Lett. 40 : 3312 – 3315 .

Abe R , and Hayasaki Y ( 2017 ) Holographic fluorescence mapping using space-division matching method . Opt. Commun. 401 : 35 – 39 .

Wan Y , Man T , and Wang D ( 2014 ) Incoherent off-axis Fourier triangular color holography . Opt. Express 22 : 8565 – 8573 .

Schilling B W , Poon T C , Indebetouw G , Storrie B , Shinoda K , Suzuki Y , and Wu M H ( 1997 ) Three-dimensional holographic fluorescence microscopy . Opt. Lett. 22 : 1506 – 1508 .

Indebetouw G , and Zhong W ( 2006 ) Scanning holographic microscopy of three-dimensional fluorescent specimens . J. Opt. Soc. Am. A 23 : 1699 – 1707 .

Liu J-P , and Wang S-Y ( 2016 ) Stereo-lighting reconstruction of optical scanning holography . IEEE Trans. Ind. Informat. 12 : 1664 – 1669 .

Rosen J , and Kelner R ( 2014 ) Modified Lagrange invariants and their role in determining transverse and axial imaging resolutions of self-interference incoherent holography systems . Opt. Express 22 : 29048 – 29066 .

Quan X , Matoba O , and Awatsuji Y ( 2017 ) Single-shot incoherent digital holography using a dual-focusing lens with diffraction gratings . Opt. Lett. 42 : 383 – 386 .

Tahara T , and Arai Y ( 2017 ) Hologram recording apparatus and hologram recording method. Japanese patent, P6245551.

Tahara T , Kanno T , Arai Y , and Ozawa T ( 2017 ) Single-shot phase-shifting incoherent digital holography . J. Opt. 19 : 065705 .

Vijayakumar A , Kashter Y , Kelner R , and Rosen J ( 2016 ) Coded aperture correlation holography—a new type of incoherent digital holograms . Opt. Express 24 : 12430 – 12441 .

Vijayakumar A , and Rosen J ( 2017 ) Spectrum and space resolved 4D imaging by coded aperture correlation holography (COACH) with diffractive objective lens . Opt. Lett. 42 : 947 – 950 .

Vijayakumar A , and Rosen J ( 2017 ) Interferenceless coded aperture correlation holography—a new technique for recording incoherent digital holograms without two-wave interference . Opt. Express 25 : 13883 – 13896 .

Rai M R , Vijayakumar A , and Rosen J ( 2017 ) Single camera shot interferenceless coded aperture correlation holography . Opt. Lett. 42 : 3992 – 3995 .

Ohtsuka Y , and Oka K ( 1994 ) Contour mapping of the spatiotemporal state of polarization of light . Appl. Opt. 33 : 2633 – 2636 .

Colomb T , Dürr F , Cuche E , Marquet P , Limberger H G , Salathè R P , and Depeursinge C ( 2005 ) Polarization microscopy by use of digital holography: application to optical-fiber birefringence measurements . Appl. Opt. 44 : 4461 – 4469 .

Nomura T , Javidi B , Murata S , Nitanai E , and Numata T ( 2007 ) Polarization imging of a 3D object by use of on-axis phase-shifting digital holography . Opt. Lett. 32 : 481 – 483 .

Tahara T , Awatsuji Y , Shimozato Y , Kakue T , Nishio K , Ura S , Kubota T , and Matoba O ( 2011 ) Single-shot polarization-imaging digital holography based on simultaneous phase-shifting interferometry . Opt. Lett. 36 : 3254 – 3256 .

Lim Y , Lee S , and Lee B ( 2011 ) Transflective digital holographic microscopy and its use for probing plasmonic light beaming . Opt. Express 19 : 5202 – 5212 .

Li W , Shi C , Piao M , and Kim N ( 2016 ) Multiple-3D-object secure information system based on phase shifting method and single interference . Appl. Opt. 55 : 4052 – 4059 .

Pu Y , Centurion M , and Psaltis D ( 2008 ) Harmonic holography: a new holographic principle . Appl. Opt. 47 : A103 – A110 .

Shaffer E , Moratal C , Magistretti P , Marquet P , and Depeursinge C ( 2010 ) Label-free second-harmonic phase imaging of biological specimen by digital holographic microscopy . Opt. Lett. 35 : 4102 – 4104 .

Shi K , Li H , Xu Q , Psaltis D , and Liu Z ( 2010 ) Coherent anti-Stokes Raman holography for chemically selective single-shot nonscanning 3D imaging . Phys. Rev. Lett. 104 : 093902 .

Amer E , Gren P , Edenharder S , and Sjödahl M ( 2016 ) Stimulated Raman scattering holography for time-resolved imaging of methane gas . Appl. Opt. 55 : 3429 – 3434 .

Ash W M III , and Kim M K ( 2008 ) Digital holography of total internal reflection . Opt. Express 16 : 9811 – 9820 .

Park Y , Popescu G , Badizadegan K , Dasari R R , and Feld M S ( 2006 ) Diffraction phase and fluorescence microscopy . Opt. Express 14 : 8263 – 8268 .

Pavillon N , Fujita K , and Smith N I ( 2014 ) Multimodal label-free microscopy . J. Innov. Opt. Health Sci 07 : 1330009 .

McNally J G , Karpova T , Cooper J , and Conchello J A ( 1999 ) Three-dimensional imaging by deconvolution microscopy . Methods 19 : 373 – 385 .

Kim B , and Naemura T ( 2015 ) Blind depth-variant deconvolution of 3D data in wide-field fluorescence microscopy . Sci. Rep. 5 : 9894 .

Chowdhury S , Eldridge W J , Wax A , and Izatt J A ( 2017 ) Structured illumination multimodal 3D-resolved quantitative phase and fluorescence sub-diffraction microscopy . Biomed. Opt. Express 8 : 2496 – 2518 .

Kim K , Park W S , Na S , Kim S , Kim T , Heo W D , and Park Y ( 2017 ) Correlative three-dimensional fluorescence and refractive index tomography: bridging the gap between molecular specificity and quantitative bioimaging . Biomed. Opt. Express 8 : 5688 – 5697 .

Quan X , Matoba O , and Awatsuji Y ( 2017 ) Image recovery from defocused 2D fluorescent images in multimodal digital holographic microscopy . Opt. Lett. 42 : 1796 – 1799 .

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Physics > Optics

Title: direct-write digital holography. development and research of a hologram printer.

Abstract: Chapter 1 gives a brief history of the field of holography along with an overview of this thesis. A more detailed description of holography is provided in Chapter 2 along with a discussion of digital holography. Chapter 3 examines the design of a one-step monochromatic hologram printer capable producing white-light viewable transmission holograms created with the aid of an LCOS display system and printed in a dot-matrix sequence. The lens system employed includes a microlens array and an afocal relay telescope which are both quantitatively examined in order to maximise the contrast, diffraction efficiency and depth of view of the final hologram image. A brief overview of speckle reduction techniques and their applicability to pulsed digital holography is presented along with experimental results of the use of a microlens array to reduce speckle effects. Chapter 4 presents an analysis of the unwanted side effects of the angular intensity distribution of a hologram pixel, using a case study for analysis. Chapter 5 examines methods for increasing both the printing speed and resolution of the hologram printer. Chapter 6 describes the analysis and design of a temperature-energy feedback system to correct for pulsed laser instabilities arising from mode beating due to temperature variations. Chapter 7 provides a conclusion to the work and discusses possible future developments.

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Digital Holography: Techniques and Applications

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Since the invention of holography in 1940s, it has been widely used in the fields of optics. After the 1990s, digital holography (DH) developed rapidly, which features the acquisition and processing of holograms with digital cameras and computers, respectively. Generally, the full information, including ...

Keywords : digital holography, digital holographic microscopy, quantitative phase imaging, phase retrieval, ptychography, 3D Imaging, 3D tomography

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Applications of digital holography in direct phase retrieval using transport of intensity and in 3d surface feature extraction.

Haowen Zhou , University of Dayton

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M.S. in Electro-Optics and Photonics

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Partha P. Banerjee

Phase information plays an important role in three-dimensional (3D) imaging. Digital holography (DH) has been widely used in 3D imaging to reconstruct the phase distribution from optical fields. The transport of intensity equation (TIE) is a way to retrieve true or unwrapped phase from phase objects with multiple captures of intensity images along the light propagation direction. In this thesis, solving TIE with the help of the transport of phase equation (TPE) is first proposed. Combining TIE with TPE can further improve the accuracy of the Fourier transform based TIE solution with no extra captures of intensity images and little sacrifice of computational efforts. Next, the combination of DH and TIE is investigated to retrieve phase without any phase unwrapping and multiple captures of intensities. Finally, correlation of holograms is proposed to extract 3D surface features directly from 2D holograms. As an illustration, an application to face recognition is presented.

Optics, digital holography, transport of intensity, transport of phase, phase retrieval, surface identification

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Zhou, Haowen, "Applications of digital holography in direct phase retrieval using transport of intensity and in 3D surface feature extraction" (2021). Graduate Theses and Dissertations . 7075. https://ecommons.udayton.edu/graduate_theses/7075

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• Published: 10 March 2021

Towards real-time photorealistic 3D holography with deep neural networks

• Liang Shi   ORCID: orcid.org/0000-0002-4442-4679 1 , 2 ,
• Beichen Li   ORCID: orcid.org/0000-0002-9271-0055 1 , 2 ,
• Changil Kim 1 , 2 ,
• Petr Kellnhofer 1 , 2 &
• Wojciech Matusik   ORCID: orcid.org/0000-0003-0212-5643 1 , 2  

Nature volume  591 ,  pages 234–239 ( 2021 ) Cite this article

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• Computational science
• Computer science
• Optical manipulation and tweezers

An Author Correction to this article was published on 26 April 2021

This article has been updated

The ability to present three-dimensional (3D) scenes with continuous depth sensation has a profound impact on virtual and augmented reality, human–computer interaction, education and training. Computer-generated holography (CGH) enables high-spatio-angular-resolution 3D projection via numerical simulation of diffraction and interference 1 . Yet, existing physically based methods fail to produce holograms with both per-pixel focal control and accurate occlusion 2 , 3 . The computationally taxing Fresnel diffraction simulation further places an explicit trade-off between image quality and runtime, making dynamic holography impractical 4 . Here we demonstrate a deep-learning-based CGH pipeline capable of synthesizing a photorealistic colour 3D hologram from a single RGB-depth image in real time. Our convolutional neural network (CNN) is extremely memory efficient (below 620 kilobytes) and runs at 60 hertz for a resolution of 1,920 × 1,080 pixels on a single consumer-grade graphics processing unit. Leveraging low-power on-device artificial intelligence acceleration chips, our CNN also runs interactively on mobile (iPhone 11 Pro at 1.1 hertz) and edge (Google Edge TPU at 2.0 hertz) devices, promising real-time performance in future-generation virtual and augmented-reality mobile headsets. We enable this pipeline by introducing a large-scale CGH dataset (MIT-CGH-4K) with 4,000 pairs of RGB-depth images and corresponding 3D holograms. Our CNN is trained with differentiable wave-based loss functions 5 and physically approximates Fresnel diffraction. With an anti-aliasing phase-only encoding method, we experimentally demonstrate speckle-free, natural-looking, high-resolution 3D holograms. Our learning-based approach and the Fresnel hologram dataset will help to unlock the full potential of holography and enable applications in metasurface design 6 , 7 , optical and acoustic tweezer-based microscopic manipulation 8 , 9 , 10 , holographic microscopy 11 and single-exposure volumetric 3D printing 12 , 13 .

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Diffraction-engineered holography: Beyond the depth representation limit of holographic displays

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Our hologram dataset (MIT-CGH-4K) and the trained CNN model will be made publicly available (on GitHub) along with the paper.

Code availability

The code to evaluate the trained CNN model will be made publicly available (on GitHub) along with the paper. Additional codes are available from the corresponding authors upon reasonable request.

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26 april 2021.

A Correction to this paper has been published: https://doi.org/10.1038/s41586-021-03476-5

Benton, S. A., Bove, J. & Michael, V. Holographic Imaging (John Wiley & Sons, 2008).

Maimone, A., Georgiou, A. & Kollin, J. S. Holographic near-eye displays for virtual and augmented reality. ACM Trans. Graph . 36 , 85:1–85:16 (2017).

Article   Google Scholar  

Shi, L., Huang, F.-C., Lopes, W., Matusik, W. & Luebke, D. Near-eye light field holographic rendering with spherical waves for wide field of view interactive 3D computer graphics. ACM Trans. Graph . 36 , 236:1–236:17 (2017).

Tsang, P. W. M., Poon, T.-C. & Wu, Y. M. Review of fast methods for point-based computer-generated holography [Invited]. Photon. Res . 6 , 837–846 (2018).

Sitzmann, V. et al. End-to-end optimization of optics and image processing for achromatic extended depth of field and super-resolution imaging. ACM Trans. Graph . 37 , 114:1–114:13 (2018).

Lee, G.-Y. et al. Metasurface eyepiece for augmented reality. Nat. Commun . 9 , 4562 (2018).

Article   ADS   PubMed   PubMed Central   Google Scholar  

Hu, Y. et al. 3d-integrated metasurfaces for full-colour holography. Light Sci. Appl . 8 , 86 (2019).

Melde, K., Mark, A. G., Qiu, T. & Fischer, P. Holograms for acoustics. Nature 537 , 518–522 (2016).

Article   ADS   CAS   PubMed   Google Scholar  

Smalley, D. et al. A photophoretic-trap volumetric display. Nature 553 , 486–490 (2018).

Hirayama, R., Plasencia, D. M., Masuda, N. & Subramanian, S. A volumetric display for visual, tactile and audio presentation using acoustic trapping. Nature 575 , 320–323 (2019).

Rivenson, Y., Wu, Y. & Ozcan, A. Deep learning in holography and coherent imaging. Light Sci. Appl . 8 , 85 (2019).

Shusteff, M. et al. One-step volumetric additive manufacturing of complex polymer structures. Sci. Adv . 3 , eaao5496 (2017).

Article   PubMed   PubMed Central   Google Scholar  

Kelly, B. E. et al. Volumetric additive manufacturing via tomographic reconstruction. Science 363 , 1075–1079 (2019).

Levoy, M. & Hanrahan, P. Light field rendering. In Proc. 23rd Annual Conference on Computer Graphics and Interactive Techniques 31–42 (ACM, 1996).

Waters, J. P. Holographic image synthesis utilizing theoretical methods. Appl. Phys. Lett . 9 , 405–407 (1966).

Article   ADS   Google Scholar  

Leseberg, D. & Frère, C. Computer-generated holograms of 3-D objects composed of tilted planar segments. Appl. Opt . 27 , 3020–3024 (1988).

Tommasi, T. & Bianco, B. Computer-generated holograms of tilted planes by a spatial frequency approach. J. Opt. Soc. Am. A 10 , 299–305 (1993).

Matsushima, K. & Nakahara, S. Extremely high-definition full-parallax computer-generated hologram created by the polygon-based method. Appl. Opt . 48 , H54–H63 (2009).

Article   PubMed   Google Scholar  

Symeonidou, A., Blinder, D., Munteanu, A. & Schelkens, P. Computer-generated holograms by multiple wavefront recording plane method with occlusion culling. Opt. Express 23 , 22149–22161 (2015).

Article   ADS   PubMed   Google Scholar  

Lucente, M. E. Interactive computation of holograms using a look-up table. J. Electron. Imaging 2 , 28–35 (1993).

Lucente, M. & Galyean, T. A. Rendering interactive holographic images. In Proc. 22nd Annual Conference on Computer Graphics and Interactive Techniques , 387–394 (ACM, 1995).

Lucente, M. Interactive three-dimensional holographic displays: seeing the future in depth. Comput. Graph . 31 , 63–67 (1997).

Chen, J.-S. & Chu, D. P. Improved layer-based method for rapid hologram generation and real-time interactive holographic display applications. Opt. Express 23 , 18143–18155 (2015).

Zhao, Y., Cao, L., Zhang, H., Kong, D. & Jin, G. Accurate calculation of computer-generated holograms using angular-spectrum layer-oriented method. Opt. Express 23 , 25440–25449 (2015).

Makey, G. et al. Breaking crosstalk limits to dynamic holography using orthogonality of high-dimensional random vectors. Nat. Photon . 13 , 251–256 (2019).

Article   ADS   CAS   Google Scholar  

Yamaguchi, M., Hoshino, H., Honda, T. & Ohyama, N. in Practical Holography VII: Imaging and Materials Vol. 1914 (ed. Benton, S. A.) 25–31 (SPIE, 1993).

Barabas, J., Jolly, S., Smalley, D. E. & Bove, V. M. Jr in Practical Holography XXV: Materials and Applications Vol. 7957 (ed. Bjelkhagen, H. I.) 13–19 (SPIE, 2011).

Zhang, H., Zhao, Y., Cao, L. & Jin, G. Fully computed holographic stereogram based algorithm for computer-generated holograms with accurate depth cues. Opt. Express 23 , 3901–3913 (2015).

Padmanaban, N., Peng, Y. & Wetzstein, G. Holographic near-eye displays based on overlap-add stereograms. ACM Trans. Graph . 38 , 214:1–214:13 (2019).

Shimobaba, T., Masuda, N. & Ito, T. Simple and fast calculation algorithm for computer-generated hologram with wavefront recording plane. Opt. Lett . 34 , 3133–3135 (2009).

Wakunami, K. & Yamaguchi, M. Calculation for computer generated hologram using ray-sampling plane. Opt. Express 19 , 9086–9101 (2011).

Häussler, R. et al. Large real-time holographic 3Dd displays: enabling components and results. Appl. Opt . 56 , F45–F52 (2017).

Hamann, S., Shi, L., Solgaard, O. & Wetzstein, G. Time-multiplexed light field synthesis via factored Wigner distribution function. Opt. Lett . 43 , 599–602 (2018).

Nair, V. & Hinton, G. E. Rectified linear units improve restricted Boltzmann machines. In Proc. International Conference on International Conference on Machine Learning (ICML) 807–814 (Omnipress, 2010).

Sinha, A., Lee, J., Li, S. & Barbastathis, G. Lensless computational imaging through deep learning. Optica 4 , 1117–1125 (2017).

Metzler, C. et al. prdeep: robust phase retrieval with a flexible deep network. In Proc. International Conference on International Conference on Machine Learning (ICML) 3501–3510 (JMLR, 2018).

Eybposh, M. H., Caira, N. W., Chakravarthula, P., Atisa, M. & Pégard, N. C. in Optics and the Brain BTu2C–2 (Optical Society of America, 2020).

Rivenson, Y., Zhang, Y., Günaydın, H., Teng, D. & Ozcan, A. Phase recovery and holographic image reconstruction using deep learning in neural networks. Light Sci. Appl . 7 , 17141 (2018).

Article   CAS   PubMed   PubMed Central   Google Scholar  

Ren, Z., Xu, Z. & Lam, E. Y. Learning-based nonparametric autofocusing for digital holography. Optica 5 , 337–344 (2018).

Wu, Y. et al. Extended depth-of-field in holographic imaging using deep-learning-based autofocusing and phase recovery. Optica 5 , 704–710 (2018).

Horisaki, R., Takagi, R. & Tanida, J. Deep-learning-generated holography. Appl. Opt . 57 , 3859–3863 (2018).

Peng, Y., Choi, S., Padmanaban, N. & Wetzstein, G. Neural holography with camera-in-the-loop training. ACM Trans. Graph . 39 , 185:1–185:14 (2020).

Jiao, S. et al. Compression of phase-only holograms with JPEG standard and deep learning. Appl. Sci . 8 , 1258 (2018).

Cimpoi, M., Maji, S., Kokkinos, I., Mohamed, S. & Vedaldi, A. Describing textures in the wild. In Proc. IEEE Conference on Computer Vision and Pattern Recognition (CVPR) 3606–3613 (IEEE, 2014).

Dai, D., Riemenschneider, H. & Gool, L. V. The synthesizability of texture examples. In Proc. IEEE Conference on Computer Vision and Pattern Recognition (CVPR) 3027–3034 (IEEE, 2014).

Kim, C., Zimmer, H., Pritch, Y., Sorkine-Hornung, A. & Gross, M. Scene reconstruction from high spatio-angular resolution light fields. ACM Trans. Graph . 32 , 73:1–73:12 (2013).

Article   MATH   Google Scholar  

Matsushima, K. & Shimobaba, T. Band-limited angular spectrum method for numerical simulation of free-space propagation in far and near fields. Opt. Express 17 , 19662–19673 (2009).

Shimobaba, T. & Ito, T. A color holographic reconstruction system by time division multiplexing with reference lights of laser. Opt. Rev . 10 , 339–341 (2003).

Hsueh, C. K. & Sawchuk, A. A. Computer-generated double-phase holograms. Appl. Opt . 17 , 3874–3883 (1978).

Mendoza-Yero, O., Mínguez-Vega, G. & Lancis, J. Encoding complex fields by using a phase-only optical element. Opt. Lett . 39 , 1740–1743 (2014).

Xiao, L., Kaplanyan, A., Fix, A., Chapman, M. & Lanman, D. DeepFocus: learned image synthesis for computational displays. ACM Trans. Graph . 37 , 200:1–200:13 (2018).

Wang, Y., Sang, X., Chen, Z., Li, H. & Zhao, L. Real-time photorealistic computer-generated holograms based on backward ray tracing and wavefront recording planes. Opt. Commun . 429 , 12–17 (2018).

Hasegawa, N., Shimobaba, T., Kakue, T. & Ito, T. Acceleration of hologram generation by optimizing the arrangement of wavefront recording planes. Appl. Opt . 56 , A97–A103 (2017).

Sifatul Islam, M. et al. Max-depth-range technique for faster full-color hologram generation. Appl. Opt . 59 , 3156–3164 (2020).

Kingma, D. P. & Ba, J. Adam: a method for stochastic optimization. In International Conference on Learning Representations (ICLR) (2015).

Ronneberger, O., Fischer, P. & Brox, T. U-net: convolutional networks for biomedical image segmentation. In Medical Image Computing and Computer-Assisted Intervention (MICCAI) 234–241 (Springer, 2015).

Yu, F., Koltun, V. & Funkhouser, T. Dilated residual networks. In Proc. IEEE Conference on Computer Vision and Pattern Recognition (CVPR) 472–480 (IEEE, 2017).

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Acknowledgements

We thank K. Aoyama and S. Wen (from Sony) for discussions; J. Minor, T. Du, M. Foshey, L. Makatura, W. Shou and T. Erps from MIT for improving/editing the manuscript; R. White for the administration of the project; X. Ju for the design of iPhone demo; and P. Ma for providing an iPhone 11 Pro for the mobile demo. We acknowledge funding from Sony Research Award Program.

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Computer Science and Artificial Intelligence Laboratory, Massachusetts Institute of Technology, Cambridge, MA, USA

Liang Shi, Beichen Li, Changil Kim, Petr Kellnhofer & Wojciech Matusik

Electrical Engineering and Computer Science Department, Massachusetts Institute of Technology, Cambridge, MA, USA

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Contributions

L.S. conceived the idea, implemented the proposed framework, built the display prototype, performed experimental validation, and conducted the iPhone and Edge TPU demo. B.L. performed the pipeline evaluation and made the Supplementary Videos. B.L., C.K. and P.K. were involved in the design of the proposed framework. L.S. and P.K. led the writing and revision of the manuscript. W.M. supervised the work. All authors discussed ideas and results, and contributed to the manuscript.

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Correspondence to Liang Shi or Wojciech Matusik .

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Peer review information Nature thanks Tomoyoshi Shimobaba and the other, anonymous, reviewer(s) for their contribution to the peer review of this work.

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Extended data figures and tables

Extended data fig. 1 visualization of masked fresnel zone plates computed by oa-pbm and performance comparison of foreground occlusion..

a , A depth image cropped from a frame of Big Buck Bunny . Three regions with different depth landscapes are highlighted in different colours. b , Masked Fresnel zone plates computed for the centre pixel of each highlighted region. Three pixels are propagated for the same distance for ease of comparison. The flat depth landscape around the green pixel results in a non-occluded Fresnel zone plate. The masked Fresnel zone plates of red and blue pixels contain sharp cutoffs at their long-distance separated occlusion boundaries, and freeform shapes at occlusion boundaries with moderate distance separation and varying depth distribution. c , Comparison of foreground reconstruction by the PBM, OA-PBM and Fresnel diffraction. The scene is a cropped modulation transfer function bar target with a step depth profile. The PBM leaks a considerable portion of the background into the foreground due to a lack of occlusion handling. The artefacts are clearly visible in the original unmagnified view. The OA-PBM removes a considerable portion of the artefacts and the remaining artefacts are visually inconsequential in the unmagnified view. d , Comparison of focal stacks reconstructed by the PBM and OA-PBM for the Big Buck Bunny . The orange bounding boxes mark the background leakage in the PBM reconstructions. a , d , Images reproduced from www.bigbuckbunny.org (© 2008, Blender Foundation) under a Creative Commons licence ( https://creativecommons.org/licenses/by/3.0/ ).

Extended Data Fig. 2 Samples of the MIT-CGH-4K dataset and comparison with the DeepFocus dataset.

a , The RGB-D image, amplitude and phase of two samples from the MIT-CGH-4K dataset. The RGB image records the amplitude of the scene (directly visualized in sRGB space) and consists of large variations in colour, texture, shading and occlusion. The pixel depth has a statistically uniform distribution throughout the view frustum. The phase presents high-frequency features at both occlusion boundaries and texture edges to accommodate rapid depth and colour changes. b , A sample RGB-D image from the DeepFocus dataset 51 . c , Histograms of pixel depth distribution computed for the MIT-CGH-4K dataset and the DeepFocus dataset. b , Image reproduced from ‘3D Scans from Louvre Museum’ by Benjamin Bardou under a Creative Commons licence ( https://creativecommons.org/licenses/by-nc/4.0/ ).

Extended Data Fig. 3 Schematic of the midpoint hologram calculation.

a , A holographic display magnified through a diverging point light source. b , A holographic display unmagnified through the thin-lens formula. c , The target hologram in this example is propagated to the centre of the unmagnified view frustum to produce the midpoint hologram. The width of the maximum subhologram is considerably reduced.

Extended Data Fig. 4 Evaluation of tensor holography CNN on model architecture and test patterns.

a , Performance comparison of different CNN architectures. b , Performance comparison of different CNN miniaturization methods. c , CNN prediction of two standard test pattern (USAF-1951 and RCA Indian-head) variants made by the authors.

Extended Data Fig. 5 Evaluation of tensor holography CNN on additional computer-rendered scenes.

a , b , CNN prediction of amplitude and phase along with focused reconstructions for holograms of a living room scene from the DeepFocus dataset 51 ( a ) and a night landscape scene from the Stanford light field dataset 29 ( b ). a , Certain still images from ‘ArchVizPRO Vol. 2’ were used to render new images for inclusion in this publication with the permission of the copyright holder (© Corridori Ruggero 2018), under a Creative Commons licence ( https://creativecommons.org/licenses/by-nc/4.0/ ). Panel b reproduced with permission from ref. 29 , ACM.

Extended Data Fig. 6 Evaluation of tensor holography CNN on real-world captured scenes.

a , b , CNN prediction of amplitude and phase along with focused reconstructions for holograms of a statue scene ( a ) and a mansion scene ( b ). Both scenes are from the ETH light field dataset 46 .

Extended Data Fig. 7 Comparison of the original DPM and the AA-DPM.

Reconstruction of two real-world scenes from the encoded phase-only holograms. The couch scene is focused on the mouse toy and the statue scene is focused on the black statue. Orange bounding boxes highlight regions with strong high-frequency artefacts. Left: DPM. Right: AA-DPM.

Extended Data Fig. 8 Holographic display prototype used for the experimental results shown in this paper.

The control box of the laser, Labjack DAQ and camera are not visualized in the figure.

Extended Data Fig. 9 Additional experimental demonstration of 3D holographic projection (part 1).

The RGB-D input can be found in Extended Data Fig. 6 .

Extended Data Fig. 10 Additional experimental demonstration of 3D holographic projection (part 2).

The RGB-D inputs can be found in Extended Data Fig. 6 for a , and Extended Data Fig. 4 for b . Panel a reproduced with permission from ref. 29 , ACM.

Supplementary information

This video demonstrates a simulated focal sweep of a CNN predicted hologram computed for a real-world captured 3D couch scene. The image resolution is 1080p.

This video demonstrates a simulated focal sweep of a CNN predicted hologram computed for a computer-rendered 3D living room scene. The image resolution is 1024*1024.

This video demonstrates a photographed focal sweep of a CNN predicted hologram computed for a real-world captured 3D couch scene. The video is captured by a Sony A7 Mark III mirrorless camera paired with a Sony GM 16-35mm/f2.8 camera lens at 4K/30 Hz and downsampled to 1080p. Only green channel is visualized for temporal stability.

This video demonstrates real-time 3D hologram computation on a NVIDIA TITAN RTX GPU. The video is captured by a Panasonic GH5 mirrorless camera with a Lumix 10-25 mm f/1.7 lens at 4K/60 Hz (a colour frame rate of 20 Hz) and downsampled to 1080P. The color is obtained field sequentially.

This video demonstrates interactive hologram computation on an iPhone 11 Pro using a mini version of tensor holography CNN (see Fig. 2 caption for network architecture details).

This video demonstrates a simulated focal sweep of a CNN predicted hologram computed for a 3D Star test pattern. The image resolution is 1550*1462.

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Shi, L., Li, B., Kim, C. et al. Towards real-time photorealistic 3D holography with deep neural networks. Nature 591 , 234–239 (2021). https://doi.org/10.1038/s41586-020-03152-0

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Holography, and the future of 3D display

• Light: Advanced Manufacturing  2 , Article number: (2021)
• Wyant College of Optical Sciences, University of Arizona, Tucson, AZ, USA
• Corresponding author: Pierre-Alexandre Blanche ( [email protected] )
• Received: 06 May 2021 Revised: 05 November 2021 Accepted: 19 November 2021 Accepted article preview online: 25 November 2021 Published online: 20 December 2021 Available Online: 2021-12-18 -->

doi: https://doi.org/10.37188/lam.2021.028

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Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article′s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article′s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ .

通讯作者: 陈斌, [email protected]

沈阳化工大学材料科学与工程学院 沈阳 110142

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Research Summary

A review of holography for 3D display applications

The pioneers of holography, Gabor, Leith, Upatnieks, and Denisyuk, predicted very early that the ultimate 3D display will be based on this technique. This conviction was rooted on the fact that holography is the only approach that can render all optical cues interpreted by the human visual system. In this review article, Dr. Pierre-Alexandre Blanche from the University of Arizona, USA, is discussing the recent accomplishments made in the field of holographic 3D display. More specifically, the real time computation of holograms with neural networks and other algorithms, the efficient transmission and distribution of the information over long distance, and the new diffractive elements allowing the rendering of the holograms in   various 3D display setups.

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• Light: Advanced Manufacturing 2 , Article number: (2021)

Corresponding author: Pierre-Alexandre Blanche,  [email protected]

• Received: 06 May 2021
• Revised: 05 November 2021
• Accepted: 19 November 2021

Abstract:  The pioneers of holography, Gabor, Leith, Upatnieks, and Denisyuk, predicted very early that the ultimate 3D display will be based on this technique. This conviction was rooted on the fact that holography is the only approach that can render all optical cues interpreted by the human visual system. Holographic 3D displays have been a dream chased after for many years, facing challenges on all fronts: computation, transmission, and rendering. With numbers such as 6.6 × 10 15 flops required for calculations, 3 × 10 15 b/s data rates, and 1.6 × 10 12 phase pixels, the task has been daunting. This article is reviewing the recent accomplishments made in the field of holographic 3D display. Specifically, the new developments in machine learning and neural network algorithms demonstrating that computer-generated holograms approach real-time processing. A section also discuss the problem of data transmission that can arguably be solved using clever compression algorithms and optical fiber transmission lines. Finally, we introduce the last obstacle to holographic 3D display, which is is the rendering hardware. However, there is no further mystery. With larger and faster spatial light modulators (SLMs), holographic projection systems are constantly improving. The pixel count on liquid crystal on silicon (LCoS) as well as microelectromechanical systems (MEMS) phase displays is increasing by the millions, and new photonic integrated circuit phased arrays are achieving real progress. It is only a matter of time for these systems to leave the laboratory and enter the consumer world. The future of 3D displays is holographic, and it is happening now.

Not long after the first demonstration of holographic images by Leith and Upatnieks 1 , as well as by Denisyuk 2 , a similar technique was used by De Bitetto and others to display motion picture holograms 3 , 4 . As the name indicates, a motion picture hologram uses a rapid succession of static holographic images to reproduce the effect of movement in 3D. Because of these successes, it was hoped at the time that a holographic television would be developed soon after. Unfortunately, more than 50 years later, there is still no holographic television in sight.

Compared to motion picture, a holographic display system needs to capture, transmit, and render 3D information. In the case of an interactive display system, such as a computer screen, there is the additional constraint that real-time manipulation of 3D data is required. This makes a universal holographic 3D display much more challenging to develop than the simple successive projection of pre-recorded holograms.

It should be noted that elements should be approximately 10 times smaller than predicted by equation 1 to achieve high-efficiency blazed diffraction gratings.

Fig. 1 plots the data rate in bits per second for different telecommunication systems according to the time of their introduction. Starting with the optical telegraph (or Chappe's semaphore) presented to Napoleon Bonaparte in 1798, the optical telegraph had a typical rate of transmission of approximately 2 to 3 symbols (196 different types) per minute, or 0.4 b/s. Consequently, the electrical telegraph, popularized in the early 1840s using Samuel Morse's code, achieved a rate of approximately 100 b/s. Graham Bell's telephone was introduced in 1876 and supported voice frequency transmission up to 64 kb/s 6 . The early NTSC black and white electronic television, available in the 1940s, had 525 interlaced lines and displayed images at a rate of 29.97 frames per second at a bit rate of 26 Mb/s 7 . The color NTSC format was introduced 10 years later and tripled the black and white bandwidth to accommodate red, green, and blue channels 8 . More recently, the digital video format makes it easier to establish the bit rate based on pixel count (excluding compression) with HDTV [email protected] Gb/s in 1990, ultra-HDTV 2160p(4K)@12.7 Gb/s in 2010, and currently 4320p(8K)@47.8 Gb/s. Note that these values are for uncompressed data feeds, and for the sake of comparison, do not include any type of compression algorithm.

Fig. 1   Stairway to holography: approximate bit rate magnitude of various telecommunication devices according to their year of introduction.

In this manuscript, we investigate the reasons why holography is still perceived to be the ultimate technique to develop a commercial 3D display, review the progress that has been accomplished toward this goal, and discuss the missing technologies that are still needed to promote the emergence of such a 3D display.

Understanding the human visual system and how it perceives the third dimension is key to developing a 3D display 9 − 11 . The human visual system takes input from many different cues to determine depth perception. It should be noted that most of these cues originate from 2D phenomena. Among these are shading, shadowing, perspective, relative size, occlusion, blurriness, and haze. The example presented in Fig. 2 shows how three simple discs, presented on whatever 2D display you are reading this article on, are interpreted as 3D balls owing to these cues.

Fig. 2   Examples of some of the 2D visual cues that affect depth perception.

Because these 2D cues are processed by the human visual system to determine the depth of a scene, then a painting, a photograph, or a movie is intelligible as long as these cues are correctly reproduced. When they are not, this leads to optical illusions such as infinite staircases and other impossible shapes.

The same applies to any 3D display system, which must, first and foremost, represent these 2D cues before introducing any additional cues. Additional 3D cues are stereo disparity, motion parallax, and accommodation. We briefly review these cues in the following sections.

Stereo Disparity

Stereo disparity is the change in parallax of the scene observed between the left and right eyes. It only requires that two images be reproduced, and as such, is the most technologically manageable 3D cue. It is so manageable in fact that the introduction of stereoscopic displays pre-dates the invention of photography. The first system was invented by Sir Charles Wheatstone in the early 1830s using drawn images 12 . This was then followed by taking pictures from two positions, or with a camera having two objectives.

When a stereo projection is meant for a single individual, such as a head-worn display, it is relatively easy to keep the left and right views separated. Images are separated by simply introducing a physical partition between both eyes 13 . For a larger audience, the separation between left and right views is often achieved by having the viewers use eyewear with different left and right lenses. The left and right image coding can be achieved using color (anaglyphs), orthogonal polarization, or alternating shutters 14 , 15 .

From a user perspective, the eyewear requirement for stereo display has been accepted in special venues such as theaters, where large productions continue to be released in stereoscopic 3D. However, the commercial failure of stereoscopic 3D television seems to indicate that for everyday experience, the public is not enthusiastic about wearing special glasses in their own living rooms 16 .

Autostereoscopy

Autostereoscopic displays achieve stereoscopy without the need for special glasses. The left and right views are directly projected toward the viewer’s intended eyes using parallax barriers or a microlens array 17 − 19 . To ensure that the correct eye intersects the correct projection, autostereoscopic systems require that the viewer be located at a particular position. This inconvenience has proven sufficient to limit the adoption of autostereoscopic 3D television by the consumer market 20 . It should also be noted that autostereoscopic systems with an eye tracking mechanism that mitigates the fixed viewer zones have been developed, but have not achieved wide popularity 21 − 23 .

Motion Parallax

Motion parallax requires many views to be projected, allowing the viewer to see the correct parallax even when moving in front of the display. The density of the different views that are projected needs to be such that the autostereoscopic information is correctly reproduced. Therefore, at least two views per inter-pupillary distance are required. However, to achieve a smooth transition from one perspective to the next, a much larger density of views is required 24 . The optimum view density depends on the exact configuration of the display and the expected viewer distance, but numbers are on the order of one view per degree 25 − 27 .

In most of the literature, a display that reproduces motion parallax is called a "multiview" or "multi-view" display while a "light-field" display reconstructs 3D images based on the concept of ray-optics and integral imaging 28 − 32 . In a multiview display, the display is designed such that the motion parallax can be reproduced smoothly when a viewer’s position changes. This is considered a multiview-type autostereoscopic display. However, when the display is also capable of reconstructing virtual or real images, it is usually called a light-field display.

When the viewer remains motionless in front of a multiview display, the observed parallax provides an experience similar to that of autostereoscopic displays 33 . However, because of the much larger number of views, a light-field display is not subject to the same limited number of view zones as autostereoscopic systems 34 . Therefore, user experience is much better, and acceptance is more likely.

Considering their somewhat achievable data rate and advantages over auto-stereoscopy, multi-view and light-field displays are currently the subject of intense research 35 − 40 . This technology certainly represents the next 3D display platform that will appear in the marketplace, and some specialized applications have already started to emerge 41 .

The Vergence-Accommodation Conflict

The vergence-accommodation conflict is the Achilles heel of all the display systems that we have introduced thus far: stereoscopic, autostereoscopic, multiview, and light-field (with some exception for the latter) and occurs when mismatched visual 3D cues are presented to an observer. The vergence-accommodation conflict occurs because the images projected by these displays are located at a fixed distance, thus producing a constant accommodation cue that cannot be adjusted, whereas vergence is provided by the parallax, which can be reproduced, and thus may vary within a scene. Disparity between accommodation and vergence cues can create a conflict in perception. This conflict leads to some visual discomfort, which is well documented in the literature 42 − 45 .

Light-field displays can reproduce some amount of accommodation when the ray density is sufficiently large. This condition is often referred to as a super-multiview 46 , 47 . Accommodation occurs in a light-field display because the image plane can be moved in and out of the display plane. This is achieved by directing the light rays from different sections of the panel toward one voxel region, as shown in Fig. 3a .

Fig. 3   Illustration of the projection of a voxel out of the emission plane by

However, there is some belief that if the view density keeps increasing in a light-field display, the accommodation distance can be extended at will. This belief arises from the extrapolation that light-field displays approximate a wavefront curvature by using line segments. If these segments are sufficiently small, they may become indistinguishable from the true wavefront curvature. Unfortunately, this ray-tracing simplification does not occur because diffraction along the pixel edges takes place, limiting the voxel resolution. Even with a pixel density in the 100s per degree, when an object is projected too far from the plane of the light-field display, it becomes blurry because of the diffraction among pixels. This diffraction effect cannot be avoided and intrinsically reduces the depth resolution and accommodation of light-field displays 48 , 49 .

To eliminate the diffraction phenomena experienced with smaller pixel sizes, strong coherence among pixels is required so that the light-field display becomes indistinguishable from holography.

The difficulty of reproducing accommodation induces visual discomfort by having to limit the display depth of the field. To reproduce a voxel out of the plane of the display, the light should be focused at that point by the optical system. Without the capability to refocus subpixels at will, the light-field display can only produce a flat wavefront from the emission plane. As presented in Fig. 3a , when a light-field display attempts to reproduce a voxel that is too far away from the emission plane, the voxel invariably becomes blurry.

To address this problem, researchers have developed multiplane light-field displays 50 − 52 . This is possible because the plane of emission can be refocused by optical elements and moved along the view depth. However, this requires some multiplexing to generate different planes in time or space, which increases the bandwidth required by the system. Another aspect that should not be overlooked is that occlusions between different planes are difficult to control when there are many view zones 53 .

Volumetric Displays

Volumetric displays have voxels located in 3D space and are affected by the same occlusion problem as a multi-plane light-field display. For both systems, the occlusions can only be correctly reproduced for one point of view 54 , 55 . Some systems (both volumetric and light-field) use an eye tracking mechanism to re-calculate the occlusions and present the correct image wherever the viewer is located 56 . However, only one correct perspective can be achieved, precluding its application for multiple observers.

In a volumetric display, the occlusion problem occurs because the emission of the voxel is omnidirectional, and there is no absorptive voxel. Nevertheless, volumetric displays have the advantage of being able to reproduce the field depth without resolution loss. They can be somewhat more natural to view when they do not use a screen to display an image. In this case, the image appears floating in thin air, which has a dramatic effect on the viewer’s perception 55 , 57 , 58 .

Volumetric displays also have the disadvantage of not being capable of projecting images outside a limited volume. The image depth is bounded by that volume, and a deep landscape or object that seemingly reaches out of the display cannot be reproduced 54 .

The mathematical computation of the bit rate for a volumetric display is as simple as multiplying the resolution of a 2D screen by the third dimension, refresh rate, and dynamic range. In Fig. 1 , the data rate for a 4K volumetric display is

However, because volumetric display setups are easily scalable, lower-resolution systems can be readily used to showcase the potential of the technology 59 − 61 .

Since the studies by Leith, Upatnieks, and Denisyuk, static holograms have demonstrated that the technique is capable of reproducing all the cues that the human visual system uses to comprehend the three dimensions 1 , 2 . By using high quality photosensitive materials, it is now possible to copy existing artifacts and display convincing holographic reproductions in full color 62 , 63 . The question that remains is how to do the same with a refreshable display.

There are three fundamental problems to be solved to create a holographic television: the computation of the holographic pattern from the 3D information, the transmission of the data from where it is captured to where it needs to be displayed, and the reproduction of the holographic pattern on the screen to display the 3D image.

Computed Generated Holograms

It should also be noted that the Fourier transform yields a real and an imaginary solution. These two components correspond to the amplitude and phase values of the hologram. Most of the time, the element used to display the diffractive pattern (such as a spatial light modulator) can only reproduce one or the other, but not both. This means that the result from a single Fourier transform will have a significant amount of noise when reproducing an image. Other sources of noise in holograms originate from the quantization error of the phase levels, diffraction in the pixel structure, and speckle caused by the random phase 70 .

To reduce the noise and boost the signal, Gerchberg and Saxton developed an iterative algorithm (GS) in 1972 71 . However, the GS algorithm only works for 2D input images and does not accept 3D information. Nevertheless, to obtain some image depth, it is possible to compute individual holograms for different discrete planes 72 − 74 . This solution renders both vergence and accommodation. However, because the holograms for the different image planes have been computed separately from one another, and not as a whole 3D scene, occlusions can only be reproduced for a single perspective. This is the same problem previously mentioned regarding volumetric displays. More recently, some algorithms have been developed to address the occlusion problem in multi-plane hologram computations. Such algorithms have demonstrated the capability to render correct occlusions in a limited view zone 75 − 77 .

For 3D displays, hologram computations directly based on 3D models can be accomplished 78 . Although the detailed description of these algorithms is beyond the scope of this article, it should be noted that these algorithms can be separated into two broad categories: wavefront-based methods, and ray-based methods.

In the ray-based technique, the hologram is calculated from incoherently captured 2D image planes of a 3D scene, and relies on the geometric optics formalism of light propagation. The ray-based methods include two distinct categories: holographic stereogram (HS) and multiple viewpoint projection (MVP) 79 − 81 . Because they do not compute the wavefront propagation, HS and MVP techniques are much faster than wavefront-based methods and can render photorealistic images 82 . However, because the full wavefront of the object is not taken into account, ray-based methods can have difficulties rendering some of the 3D optical cues. Moreover, HS techniques experience some limitations in depth of field because the different views are combined incoherently 48 . Another drawback of the MVP approach is the need to capture or render a large number of images involving small increments in the location of the camera. Otherwise, the motion parallax can be jumpy, and occlusions are not represented well. In a sense, HS and MVP holograms are hybrids falling between light-field displays and holographic displays.

In the wavefront-based methods, the propagation of the light wave is computed starting from a point light source that is illuminating either a point cloud or a polygon representation of the object. The CGH is calculated by simulating the interference between the wavefront coming from the object and another point light source or reference beam. The advantage of these methods is that they natively consider occlusion and parallax cues, so their rendering is accurate. However, this accuracy comes at the cost of high processing demand, as described previously 48 , 83 , 76 . This processing demand is driven by the fact that each point of the CGH must take into account the interference between each and every beam projected from the portion of the object that is visible from that location in the hologram plane. When the point on the hologram moves, the perspective of the object also moves correspondingly.

Some of the computations for generating the CGH can be stored upfront in a look-up table 84 . This information can be retrieved much faster than if it is computed multiple times. There is a fine balance to achieve between large memory storage and computational complexity. To accomplish this balance, different types of algorithms have taken advantage of look-up tables at different stages of CGH computations 85 − 87 .

To handle the massive amount of data required to compute 3D holograms in a reasonable amount of time, computations are sometimes performed on specially built hardware accelerators 88 . This hardware is dedicated to the calculation of the Fresnel phase pattern 86 , 88 − 91 .

Despite recent advances in the field of computer holography, it seems that from the published images available, the realism of the projected 3D images computed with wavefront-based algorithms requires significant improvement to become convincing (see Fig. 4 ) 75 , 92 . This is by no means a criticism of the notable achievements accomplished in that discipline, it is rather a testament to how difficult it is to reproduce a fully detailed holographic image.

Fig. 4   Examples of optical reconstructions of wavefront-based computer generated holograms from recently published articles.

In many cases, the holographic image computed using a wavefront-based method lacks texture (see Fig. 4(2) ). This should not be surprising, considering that texture rendering considers the finest details of the material surface. This level of detail cannot yet be achieved by computer. A parallel can be drawn with the more familiar world of 2D animation, where early movies depicted blocky characters lacking luster but in modern times, the production team can use any level of photorealism that suits the artistic needs of the story (see for example, 93 ).

Techniques such as machine learning, neural networks, and artificial intelligence have recently been applied with great success to the computation of holograms 94 − 98 . In the most general sense, the algorithms associated with these techniques work by training a computing network with some input images (ground truth) and use a camera to observe holograms generated by an optical system. The parameters of the code are optimized by the algorithm to minimize a loss function that forces the holograms to converge toward the original images. Once training is complete, the parameters are frozen, and the algorithm is eventually capable of calculating the hologram of any input image. These techniques are particularly effective at performing fast computations once the training period is complete and at solving the problems associated with texture rendering 99 , 96 . However, for the most part, these algorithms work with 2D images, but are expected to soon be extended to 3D images.

Transmission of Holograms

The image captured for a holographic display can satisfy the minimum requirements of the human eye and does not have to use coherent illumination and resolve nanometric interference fringes, as is the case with static holograms.

To suit the human eye accommodation, the 3D information to be reproduced can have a depth resolution of only a few centimeters, instead of the nanometers achieved with holography 10 . Such an image can even be compressed into a 3D mesh model overlaid by a texture pattern, as that used in modern video games. Video games handle this information together with the location of a virtual camera to display a 2D image. In the same way, the game engine could display a 3D image if the display required it. As a case in point, video games can be adjusted to and played using stereoscopic virtual reality headsets.

Because of this increase in data size, it may be much more efficient to transmit the 3D image/model rather than the holographic pattern 100 , 101 . In this case, the computation of the hologram should be performed at the client (receiver) location. This model is named the "thick client" because the computation is performed locally to avoid overwhelming the long-distance transmission medium. This means that the local site requires significant computational power to support this decoding (see the above section regarding Computed Generated Holograms).

A model of the transmission and reproduction of holographic images is presented in Fig. 5 , along with the different orders of magnitude of the computation and data rate needed at each stage.

Fig. 5   Schematic of a holographic television transmission process.

There is no clear advantage between the thick and lean client models. The main reason is that the need for the transmission of 3D holographic images and movies does not yet exist. However, it should be noted that the compression algorithm for hologram storage and transmission is not as effective as algorithms for natural images, such as JPEG and MPEG. This arises from the fact that the resolution of a diffraction pattern cannot be decreased without destroying the light interference it is suppose to generate and therefore the holographic image. Diffraction patterns need to be compressed using a near-lossless algorithm 104 − 107 .

Another important point regarding the transmission of holograms is that the computation of the interference pattern is specific to the display architecture. For the proper reproduction of a hologram, the computation of the interference pattern must consider whether the display is operating in full parallax versus horizontal parallax only, what are the exact illumination wavelengths, and what is the pixel density (among other parameters). Likewise, legacy displays that will be operating at the same time, such as 2D televisions, stereoscopic, auto-stereoscopic, and eventually volumetric displays, must be considered. To ensure compatibility among all devices, a lean client configuration would have to send the various display parameters to the server and receive the pre-calculated data in return. In the case of a thick client architecture, the server can invariably send the same model to the client, which is then further transformed locally. From this perspective, the thick client is simply another type of display that can be integrated into a lean client network, making these two concepts complementary rather than antagonistic.

Holographic Display Setups

Spatio-temporal product.

These ludicrous numbers again point to the difficulty of the task at hand. Nevertheless, researchers have demonstrated that such a tiling approach actually works, although on a smaller scale 108 − 111 .

Another possible approach to reduce the STP of a full holographic system is to limit the eye box in which the hologram is projected. Using this technique, the light is directed toward the viewer using an eye-tracking system or a head-mounted display (AR/VR headset) 116 − 120 . Knowing the location of the viewer dramatically reduces the calculation of the hologram because only a limited number of viewpoints need to be taken into account. Likewise, if the viewer is within a predefined region, the angular extent of the hologram (its diffraction angle) can be narrowed, and the number of diffractive pixels decreases. The advantage of this technique is that it does not sacrifice image quality or 3D cues.

Spatial Light Modulators and Phase Array Devices

To increase the STP of SLMs, it is possible to move away from the LCoS technology and use microelectromechanical systems (MEMS) instead. MEMS are composed of micro-mirrors that can be tilted or moved to interact with light. They can have the same number of pixels and approximately the same pixel pitch as LCoS. However, their refresh rate can be orders of magnitude higher 122 , 123 . This increases their STP by the same factor, reducing the number of units needed to create a holographic display 124 − 126 .

Early MEMS examples include micro-ribbons developed by Sony that were used to construct a diffractive light modulator (or grating light valve). This technology boasted an impressive switching speed of 20 ns 127 , 128 . However, micro-ribbons are one-dimensional, which requires another scanning mechanism to form a 2D image.

At about the same time, Texas Instruments experimented with a phase modulator that moved pixels up and down to modulate the phase 129 . Unfortunately, this MEMS modulator was not commercialized. Instead, Texas Instruments invested in one of the most popular MEMS, the digital light processor (DLP) 130 .

Most recently, Texas Instruments has rejuvenated its earlier attempt at a phase modulator and is developing a piston MEMS capable of achieving a much higher efficiency 132 − 134 . This phase light modulator (PLM) should be extremely useful in the development of holographic 3D display systems. If the PLM is capable of operating at 20 kHz as some DLPs can, it will increase the STP of this MEMS by a factor of 100 compared to typical LCoS SLMs.

Another approach that can increase the intensity of a hologram using low-efficiency devices is to use a refreshable holographic material. Refreshable materials, such as photorefractive polymers, can record the wavefront generated by the SLM and, owing to their high diffraction efficiency, amplify the intensity of the hologram. Video-rate holographic projection, as well as large holographic displays, have been demonstrated using this type of material 34 , 135 , 136 . However, it should be noted that these materials currently rely on an electronically addressable device (SLM, DLP, or other) to display the initial holographic pattern.

Considering that the STP is the key to unlocking a practical holographic 3D display, the approach taken by a group of researchers at MIT and BYU (initiated before the DLP was available) was to start with the device that had the largest STP at the time, acousto-optic material (AOM) 137 , 138 . Regarding acousto-optic materials, the propagation of a sound wave creates a density modulation that diffracts light. If the sound wave is correctly programmed, the diffracted light can form a holographic image. In its waveguide format, the acousto-optic modulator allows for a longer interaction length between light and the acoustic wave generated, which further increases the STP 139 − 141 . A single leaky acousto-optic waveguide can have a 50 MHz usable bandwidth per color, which corresponds to 1.67 Mpixels at 30 Hz. By fabricating multiple waveguide channels in a single crystal, these numbers can easily be increased by several thousands to reach an STP of 50 Gpixels/s. Although the initial demonstrations using AOM provided horizontal parallax only, it is theoretically feasible to feed the different waveguides using a single laser source and control the phase such that horizontal and vertical coherent beam steering can be achieved 142 , 143 .

Another high-STP device is the phased array photonic integrated circuit (PIC) 144 , 145 . In this approach, nanophotonic phased arrays are built by recording branching waveguides on a photonic wafer (see Fig. 6 ). The waveguides are organized such that they distribute light projected from a single source over a 2-dimensional grid. The phase at the end of each waveguide can be adjusted by an electro-optic or thermo-optic phase regulator. The light is extracted orthogonally from the wafer by a grating outcoupler terminating each waveguide. Analogous to phased array radar, the grating outcoupler is also called an optical antenna.

Fig. 6   Schematic of a photonic integrated circuit optical phased array. A single coherent laser source is directed inside a waveguide, from which light is extracted by multiple grating couplers (acting as light antennae). The phase at each antenna can be tuned using a phase modulator to create a hologram.

The preferred material for PIC is silicon, which does not transmit visible light. Other materials with better transmission in the visible wavelengths should be used for display purposes. Silicon nitride or silica platforms have already been explored for optical phased arrays in the literature, but remain in their experimental phase 145 , 146 , 148 , 149 .

Compared to MEMS and LCoS that have a fill factor above 90%, the fill factor of the phased array is fairly low, at approximately 25%. The fill factor affects the diffraction efficiency owing to the presence of side-lobe emissions that cannot be canceled if the antennae are too far apart. This separation is due to the limited turn radius of the waveguide and the required separation between waveguide elements to avoid cross-coupling 150 . Both factors, turn radius and waveguide separation, are dictated by the difference in the index of refraction between the inside and outside of the waveguide. A larger index difference would allow for a larger fill factor.

The phase control of the pixels is better in LCoS than in both MEMS and phased arrays. The LCoS phase is analog and proportional to the applied voltage and is therefore uniform across pixels. In contrast, current MEMS micro-mirror levels are discrete and limited to 4 bits, and exhibit some nonlinearity 134 . For phased arrays, the phase control is analog and accurate, but has to be characterized for each element individually owing to manufacturing inconsistencies 145 .

In summary, none of the current SLM technologies is sufficiently mature to meet all the criteria required for a large-size, high-definition holographic 3D display. This should not overshadow the considerable progress that has been made over the past years, bringing the end goal ever closer.

Holography is still considered as the ultimate technology that will enable rendering of all the optical cues needed for the human visual system to see projected images in 3D. All other technologies, such as (auto) stereoscopy, light-field, or volumetric displays suffer from trade-offs that limit 3D rendering. Nonetheless, these technologies will likely prove to be stepping stones leading to better visual comfort until holographic displays are achieved.

Some of the doors that were preventing holographic television from being made possible only a few years ago have already been unlocked. The fast computation of 3D holograms to properly control occlusions and parallax is now within reach as is a solution to the problem of data transmission. The exact architecture of the network (thick or lean client) is unclear, but higher compression rates and ever faster telecommunication infrastructures supporting the Internet mobile communications make streaming the data for a holographic television feasible, if not yet accessible.

However, some challenges remain to be solved. The two main obstacles at the time this manuscript was written are the computation of photorealistic 3D holograms in a reasonable amount of time, and a suitable electronic device for the reproduction of large holographic 3D images with high resolution.

For the pioneers of holography, Gabor, Leith, Upatnieks, and Denisyuk, the challenge of controlling diffractive pixels could only have been a physicist’s dream. This dream has now been transformed into an engineering nightmare, as devices that can project holographic images exist, but scaling the format to project large images can be surprisingly difficult. Computational time becomes prohibitive, and controlling trillions of pixels currently requires an extremely large number of graphic cards.

Nonetheless, the difficulty of projecting large holograms will soon no longer be in the engineering realm, but will rather transform into an economic problem. Initially, the hardware needed to build a holographic television will be too expensive to be successfully commercialized as a television set. Once price becomes affordable, the holographic television will face the same hurdle that each new media is bumping into, which is the availability of correctly formatted content. There is no advantage in owning a holographic television if creators are still producing 2D movies exclusively. For these reasons, it is likely that the market will move incrementally, starting with HPO multiview, expanding to light-field and full parallax, and finally reaching holography.

To achieve this dream of the perfect display, we should remember that the bit rate progression reported in Fig. 1 is not an immovable fact of nature. It is a testament to human ingenuity and hard work. This exponential growth can be influenced in one way or another by our own actions. Ultimately, where there is a will, there is a way, and the desire for a truly immersive visual experience is ingrained in human nature. It is this desire that will make the holographic television a reality sooner than later.

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• Fig. 1 Stairway to holography: approximate bit rate magnitude of various telecommunication devices according to their year of introduction.
• Fig. 2 Examples of some of the 2D visual cues that affect depth perception.
• Fig. 3 Illustration of the projection of a voxel out of the emission plane by a a light-field display, and b a holographic display.
• Fig. 4 Examples of optical reconstructions of wavefront-based computer generated holograms from recently published articles. (1) Reproduced from [ 75 ]. Numerical and optical reconstruction results when focusing on the a, c head and b, d tail of the dragon. (2) From [ 93 ] presenting rendering images and optical reconstruction images of different surfaces a, d rough surface b, e smooth surface c, f rough surface with texture.
• Fig. 5 Schematic of a holographic television transmission process. Comparison between thick client and lean client architectures.
• Fig. 6 Schematic of a photonic integrated circuit optical phased array. A single coherent laser source is directed inside a waveguide, from which light is extracted by multiple grating couplers (acting as light antennae). The phase at each antenna can be tuned using a phase modulator to create a hologram.

Philip Zupancic

Rubidium lab.

Visiting Student (2012-2013)

Dynamic Holography and Beamshaping using Digital Micromirror Devices

Publications, ultra-precise holographic beam shaping for microscopic quantum control.

Digital holographic interferometry for measuring the absorbed three-dimensional dose distribution

• Regular Article
• Published: 25 May 2020
• Volume 135 , article number  436 , ( 2020 )

Cite this article

• Mohammad Reza Rashidian Vaziri   ORCID: orcid.org/0000-0002-4775-4606 1 ,
• Amir Mohammad Beigzadeh 2 ,
• Farhood Ziaie 2 &
• Mehrdad Yarahmadi 3  

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Ionizing radiations are being widely used in a variety of medical and industrial applications in which the exact determination of the absorbed dose distribution is of crucial importance. Digital holographic interferometry (DHI) is an optical technique that uses lasers to produce fringe patterns which must be reconstructed to measure the physical quantities of interest. The DHI technique is sensitive to noise that makes it difficult to adopt this technique for practically measuring the absorbed dose. In this paper, a new approach to DHI has been developed based on using fringe contouring, polynomial phase fitting and inverse Abel transformation, to reconstruct the three-dimensional dose distribution in noisy conditions. In order to assess the feasibility of this approach in measuring the absorbed dose distributions in noisy conditions, the whole approach is modeled for high energy electrons. It is shown that the three-dimensional dose distribution inside the absorbing medium can be obtained with good accuracy even in the presence of considerable amounts of deliberately added noise to the holograms.

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M. Falahati et al., J. Instrum. 13 , P02028 (2018)

Article   Google Scholar  

E. Hussmann, Appl. Opt. 10 , 182 (1971)

Article   ADS   Google Scholar  

J. Seuntjens, A. DuSautoy, Standards and Codes of Practice in Medical Radiation Dosimetry, vol. 37 (2002)

A.M. Beigzadeh et al., Lasers Surg. Med. (2020). https://doi.org/10.1002/lsm.23193

A. Krauss, Metrologia 43 , 259 (2006)

N.V. Klassen, C.K. Ross, J. Res. Natl. Inst. Stand. Technol. 102 , 63 (1997)

A. Miller, W. McLaughlin, Phys. Med. Biol. 21 , 285 (1976)

E. Flores-Martinez, M.J. Malin, L.A. DeWerd, Rev. Sci. Instrum. 87 , 114301 (2016)

L. Heflinger, R. Wuerker, R. Brooks, J. Appl. Phys. 37 , 642 (1966)

J. Devanney, Nucl. Instrum. Methods 120 , 77 (1974)

A. Miller, W.L. McLaughlin, Nucl. Instrum. Methods 128 , 337 (1975)

M.R. Vaziri, F. Hajiesmaeilbaigi, M. Maleki, J. Opt. 15 , 035202 (2013)

E. Hussmann, W. McLaughlin, Radiat. Res. 47 , 1 (1971)

A. Miller, Nukleonika 24 , 907 (1979)

Google Scholar  

A. Miller, E. Hussmann, W. McLaughlin, Rev. Sci. Instrum. 46 , 1635 (1975)

S. Nicolau, D.G. Sporea, V. Niculescu, in International Conference on Optical Metrology (International Society for Optics and Photonics, 1999), p. 393

U. Schnars, W. Jüptner, Appl. Opt. 33 , 179 (1994)

U. Schnars et al., in Digital Holography and Wavefront Sensing , ed. by U. Schnars, C. Falldorf, J. Watson, W. Jüptner (Springer, Berlin, 2015), p. 69

A. Cavan, J. Meyer, Med. Phys. 41 , 022102 (2014)

Z. Malacara, M. Servin, Interferogram Analysis for Optical Testing (CRC Press, Boca Raton, 2016)

Y. Huang et al., Opt. Exp. 19 , 606 (2011)

E. Flores-Martinez, et al., in AIP Conference Proceedings (AIP Publishing, 2016), p. 110001

U. Schnars, JOSA A 11 , 2011 (1994)

R. Arizaga et al., Opt. Commun. 108 , 209 (1994)

P. O’shea, IEEE Signal Process. Lett. 9 , 251 (2002)

M.R.R. Vaziri, F. Hajiesmaeilbaigi, M.H. Maleki, Opt. Eng. 51 , 044301 (2012)

J.F. Briesmeister, MCNP–A General Monte Carlo Code for Neutron and Photon Transport (Los Alamos National Laboratory, Los Alamos, 1986)

E. Kazemi et al., Anal. Chim. Acta 905 , 85 (2016)

A. Beigzadeh, M.R. Vaziri, F. Ziaie, Nucl. Instrum. Methods Phys. Res. 864 , 40 (2017)

T. Kreis, Handbook of Holographic Interferometry: Optical and Digital Methods (Wiley, New York, 2006)

B. Farmanfarmaei, M.R. RashidianVaziri, F. Hajiesmaeilbaigi, Quantum Electron. 44 , 1029 (2014)

A. Beigzadeh et al., Radiat. Meas. 119 , 132 (2018)

J.B. Schemm, C.M. Vest, Appl. Opt. 22 , 2850 (1983)

J.J. Snyder, Appl. Opt. 19 , 1223 (1980)

G.A. Mastin, D.C. Ghiglia, Appl. Opt. 24 , 1727 (1985)

K.J. Gasvik, K.G. Robbersmyr, T. Vadseth, in 33rd Annual Technical Symposium (International Society for Optics and Photonics, 1989), p. 64

T. Yatagai et al., Opt. Eng. 21 , 213432 (1982)

C. Hilditch, Mach. Intell. 6 , 403 (1969)

M. Cheriet et al., Character Recognition Systems: A Guide for Students and Practitioners (Wiley, New York, 2007)

Book   Google Scholar  

G. Pretzier, Z. Naturforsch. A 46 , 639 (1991)

Article   ADS   MathSciNet   Google Scholar  

G. Pretzier, H. Jager, T. Neger, Meas. Sci. Technol. 4 , 649 (1993)

M. Berger, S. Seltzer, in Studies in Penetration of Charged Particles in Matter, vol. 205 (1964)

M.J. Berger, S.M. Seltzer, National Standard Reference Data System (1982)

G.M. Hale, M.R. Querry, Appl. Opt. 12 , 555 (1973)

L. Tilton, J. Taylor, J. Res. Natl. Bur. Stand. 20 , 419 (1938)

D.B. Leviton, B.J. Frey, in SPIE Astronomical Telescopes  +  Instrumentation (International Society for Optics and Photonics, 2006), p. 62732K

K. Itoh, Appl. Opt. 21 , 2470 (1982)

D.C. Ghiglia, M.D. Pritt, Two-Dimensional Phase Unwrapping: Theory, Algorithms, and Software (Wiley, New York, 1998)

MATH   Google Scholar  

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Photonics and Quantum Technology Research School, Nuclear Science and Technology Research Institute, Tehran, Iran

Mohammad Reza Rashidian Vaziri

Radiation Application Research School, Nuclear Science and Technology Research Institute, Tehran, Iran

Amir Mohammad Beigzadeh & Farhood Ziaie

Department of Physics, Iran University of Science and Technology, Tehran, Iran

Mehrdad Yarahmadi

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Correspondence to Mohammad Reza Rashidian Vaziri .

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Rashidian Vaziri, M.R., Beigzadeh, A.M., Ziaie, F. et al. Digital holographic interferometry for measuring the absorbed three-dimensional dose distribution. Eur. Phys. J. Plus 135 , 436 (2020). https://doi.org/10.1140/epjp/s13360-020-00443-3

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Received : 31 December 2019

Accepted : 12 May 2020

Published : 25 May 2020

DOI : https://doi.org/10.1140/epjp/s13360-020-00443-3

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CUDA-accelerated real-time digital holography - my master's thesis

jmorez/realtime_digital_holography

Folders and files, repository files navigation, rtdh-cuda-glfw.

Real-Time Digital Holography accelerated with CUDA and visualized with GLFW

Required libraries

I listed the versions that I created the project with, other versions are untested but will likely work.

• GLEW 1.13.0
• GLFW 3.1.2 (WIN64)
• (Visual Studio 2013 or another CUDA-compatible VS version)

Configuring the camera

Using the different modes.

• Video mode: displays the raw image that the CCD registers. Useful for alignment or other optical experiments.
• Reconstruction mode: real-time Fresnel reconstruction. You can adjust the reconstruction distance with the slider. You can also display the phase, although it is meaningless here because there is no phase to compare it to.
• Holographic interferometry mode: displays the phase difference relative to a recorded phase (which is achieved by pressing R).
• Fourier Transform mode: plain Fourier transform of the CCD image. In conjuction with a lens you could draw periodic patterns on a paper, film it and see the 2D power spectrum.
• View recorded frame mode: speaks for itself.

1 - Select video mode

2 - Fresnel reconstruction

3 - Holographic interferometry

R - Record a frame for holographic interferometry

V - View recorded frame

M - Display magnitude (if applicable)

P - Display phase (if applicable)

C - Show/hide control dialog

For additional support you can contact me at jan.morez [AT] gmail [DOT] com.

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Summer 2024: Thermal characterization during cryopreservation and rewarming via digital holography interferometry

• Class Notes

The Latest News from Your Classmates

May / June 2024

CHECK OUT OUR NEW SECTION: GROUP NOTES!

Scroll down for the debut of Group Notes, which comprises alumni news about members of Cornell groups—including campus activities, alumni organizations, and more—across generations. Want to see your group represented in future sections? Email us for information!

Welcome back, classmates! Read on for another excerpt from the essay I wrote about my time at Cornell, originally written for and published by my fraternity, Alpha Delta Phi, and featured in the last two Class Notes sections:

We had regular parties in the basement at Alpha Delta Phi, but there was little or no hard liquor. We drank beer from a keg, the tapping of which was a skill we all learned. I think it was mostly the local Stegmaier’s, which was not a particularly good beer, but it was cheaper. Singing was a big pastime, and knowing the words to all the songs was important to your standing with your brothers and your date.

One event I will never forget occurred during the spring of 1946, when we were sharing the house with Kappa Alpha. At a Saturday night party downstairs, the president of KA was sitting on a stool at the bar, surrounded by co-eds who were listening, I suppose, to his war stories. Suddenly, he grabbed an ice pick from behind the bar and drove it into his lower leg! There were shrieks and shocked looks from the co-eds. Then he pulled out the ice pick, pulled up his pant leg, and showed a wooden leg that he had acquired as a result of war injuries!

Thomas Wells ’43 , BArch ’50, proposed to the fraternity that he decorate the walls of the two rooms in the basement, which were our bar and party area. We said OK, and he arrived with two co-eds from architecture or fine arts. Over weeks, they covered the walls with the “figures” of Abner Dean, a very popular cartoonist/artist at that time. For a time, it became the talk of the campus, and we got a big kick out of it. You can even see pictures of it in the background of a 1948 Cornellian yearbook: a picture of a group singing at the usual table in the Alpha Delt bar (on page 364) and then one of me between two women (at right on page 385), both with the paintings in the background.

Late one night, [ Peg Wilharm Tuttle ’48 and I] drove out the east bank of Cayuga Lake to watch the sunrise—and when it came up behind us, I proposed, and she accepted. Ray Tuttle ’48

I married a Cornellian, Margaret (Wilharm) , Class of 1948. She was an Alpha Phi, and I never dated her at Cornell. That we ended up married was a real series of incidents. One day in my fifth and final year, I got on the bus outside Olin Hall to go downtown. I recognized and sat down beside a girl I remembered from a course I was taking in industrial and labor relations (ChemEs were required to take a liberal arts course in year five, and my choice was career-oriented, not culture-oriented, as the ChemE school might have intended). Peg always sat near the front of the classroom next to the same boy, whom I assumed was her boyfriend but later learned was a Chi Psi brother of her boyfriend keeping an eye on her. We talked on the way downtown on the bus and learned an odd coincidence: my family and I lived in Cleveland, and I had just taken a job in Pittsburgh after graduation, while she had lived all her life in Pittsburgh, but her dad’s company had just moved to Cleveland, where she would go after graduation. So we parted with no plans to ever meet again.

Working in Pittsburgh, I used to go back to see my folks in Cleveland occasionally. On one trip, I joined my parents in grocery shopping, because next door was a sporting-goods shop and I wanted to buy a new squash racquet. After shopping, I joined my parents in the grocery store, and there was a somewhat familiar face at the cheese counter: Peg Wilharm! She later told me she was with her parents only because they were going to shop for a new car, and she went along hoping to persuade them not to buy another black Buick.

I asked her out for a beer and supper and soon learned that the boyfriend was no longer—and we dated in Cleveland and Pittsburgh, where she visited an uncle there to see me. I asked her back to an Alpha Delt house-party weekend and, late one night, drove out the east bank of Cayuga Lake to watch the sunrise—and when it came up behind us, I proposed, and she accepted. So Cornell and Alpha Delt had important roles to play. ❖ Ray Tuttle ( email Ray ) | Alumni Directory .

I hope you all took the time to fill out and return the Share Your News form that was recently mailed to you. If you haven’t yet, it’s not too late! Please do send us your news—via the hard-copy form or the online news form —so our future class columns can be full of news from all of you. Whether your news is ordinary or extraordinary, we want to hear it! ❖ Class of 1949 ( email c/o Alexandra Bond ’12 ) | Alumni Directory .

In my previous two columns, I highlighted short bios of some of the accomplished women of our Class of the Century. In this issue I highlight classmate Marion Steinmann , author of the book Women at Work: Demolishing a Myth of the 1950s (2005, Xlibris). Marion modestly included as co-authors “The Women of the Cornell Class of 1950.” Also, her book’s dedication, “To the men we married who encouraged us to follow our dream,” is gracious because, unlike those about whom she wrote, Marion didn’t marry until age 50, had no children, and did not earn an advanced degree.

The women that Marion interviewed demolished the myth that, in the 1950s, women had little choice but to be housewives and not be employed outside the home. These courageous women earned a total of 134 advanced degrees including 22 PhDs and five MDs. Among the 134 were 13 college professors, 11 attorneys, one judge, and five engineers, as well as others.

An education in the Cornell College of Home Economics, while including studies in science and the liberal arts, was not designed for advanced degrees. It’s therefore remarkable that our intelligent, energetic, and forward-looking colleagues were able, with good humor and perseverance, to overcome family responsibilities, academic obstacles, and gender prejudices to move into advanced degree programs in law, medicine, education, business, and other professional fields.

Marion attended West High in Rochester, NY, where she excelled academically and was editor of the school newspaper. She came to Cornell with national and state scholarships to major in microbiology in the College of Agriculture. On campus she was a member of Octagon and Kappa Alpha Theta sorority, was vice president of the Women’s Self-Governing Association, and with her intense interest in journalism served as news editor of the Cornell Daily Sun .

Remarkably, upon graduation, she (an Aggie, not a journalism major) was hired by the prestigious Life magazine. That speaks highly of a Cornell BS in agriculture and Marion’s high intellect and writing competence. At Life she was a reporter in the science department, writing on an amazing variety of subjects such as archeology, astronomy, genetics, moon exploration, lasers, holography, the first open-heart surgery, and bone transplants. Over her 22 years with Life , she was promoted from writer to assistant editor, and when the weekly Life ceased publication in 1972, she was the associate editor.

Henry Erle ’50 , MD ’54, lives in a high rise with views of the Robert F. Kennedy and George Washington bridges and the Weill Cornell college campus.

Thereafter she was a freelance author of books primarily in the field of medicine and healthcare, as well as articles for the New York Times Magazine , the Saturday Evening Post , Smithsonian Magazine , Cornell Alumni Magazine , and others. Her books included Island Life , Life and Health , The American Medical Association Book of Back Care , The Children’s Hospital of Philadelphia Parent’s Guide to Allergies and Asthma , and The Children’s Hospital of Philadelphia Guide to Childhood Infections . In 1971 Marion received the American Medical Association’s award for an article, “Fighting the Genetic Odds.”

In 2000, accessing surplus class funds, our class approved publication of the history of our class with the title Curfews, Chaos and Champions , co-edited by Marion and classmate John Marcham . Because it was also a history of the tumultuous post-WWII times , it was subsequently republished under the title Postwar Cornell: How the Greatest Generation Transformed a University, 1944–1952 . The original book was also converted into an engaging film. At the 1965 class Reunion, copies of the film and original book were given to all attendees and later to those unable to attend.

For 10 years, Marion served with me as class co-correspondent, responsible for writing news of class members for the Class Notes section of each issue of the former Cornell Alumni Magazine . Our relationship was cordial and professional, but I learned little about her personal, non-work life. Her obituary was the lead in the obituary section of the April 20, 2020 issue of the Philadelphia Inquirer , which mentioned that she had climbed Mt. Kilimanjaro. And after a late-in-life marriage to Charles Joiner, Temple University Chair of Political Science, they lived in Chestnut Hill in Philadelphia, where she enjoyed cooking, gardening, and entertaining.

I received a nice note from Henry Erle , MD ’54 (New York, NY), Weill Cornell Medicine Roberts Family Professor Emeritus of Internal Medicine. With his parents and younger brother, he escaped from Nuremberg, Germany, in 1939, where in 1938 his grandfather had been murdered during Kristallnacht. He attended Stuyvesant High School and came to Cornell on a Regents Scholarship. The highlight of his campus life was meeting Joan (Greenblatt) at Hillel House, whom he married in 1952 and, as he says, “made up for my lost childhood.” After Cornell med school, until retirement in 2007 at age 78, he practiced internal medicine at Cornell/New York Medical Center, now Weill Cornell Medicine.

Wife Joan earned an MD at New York University in 1954, did post-doc studies in psychiatry, and taught and did research at New York Psychoanalytic Institute. Joan died 10 years ago after a struggle with Parkinson’s disease. Henry has two physician sons, David and Steven , MD ’86 , and five grandkids. At the time of this writing, Henry was living on the 46th floor of a high rise with views of the Robert F. Kennedy (formerly Triborough) and George Washington bridges and the Weill Cornell college campus, studying a variety of contemporary topics, and planning a visit to his younger brother in Florida. ❖ Paul Joslin ( email Paul ) | 13731 Hickman Rd., #4207, Urbandale, IA 50323 | tel., (515) 278-0960 | Alumni Directory .

Frances Goldberg Myers writes, “The big event of the year was my 94th birthday. Living in an over-50 community, I am acknowledged mostly as a ‘role model’ by the newer, younger residents, since I speak up at meetings, participate in many community activities, and make new, younger friends as they buy into the community. With the death of Shelley Epstein Akabas in 2023, I have only one friend left who knew me when I was 17.

“My children, Ken ’77 (Yale PhD), Pam ’78 , and Nathaniel III ’82 , DVM ’87, are all active in their chosen careers and contributing to making the world a better place. Ken is the Gerson Curator of American Art at the Detroit Institute of Arts; Pam is executive director of the prize-winning, nationally recognized Asheville Art Museum (NC); and Nathaniel, known as ‘Chip,’ is a doctor of internal medicine in his own veterinary practice. The following generation of Cornellians is Sarah ’13 , daughter of Ken, a silviculturist for the National Forest Service in Nebraska with a Penn State MA (yes there is a forest in Nebraska, the only planted forest in the U.S.; planted by the CCC in the 1930s). We are waiting to see if Benjamin, son of Chip, will join the Cornellian family.

Living in an over-50 community, I am acknowledged mostly as a ‘role model’ by the newer, younger residents. Frances Goldberg Myers ’51

“I’ve been a widow since 2004 but keep busy making new friends and participating in a variety of activities and wondering what has happened to America. Social media has certainly changed society. I was in Home Ec but took advantage of all the wonderful Cornell professors in government, labor relations, Asian policy, architecture, and literature to get an introduction to the wide world. But Home Ec provided me with entry into various jobs, from publishing to mental health rehabilitation, community organizing for people with disabilities at the county level and volunteer work in several areas.

“I now find new areas to learn about, so life is exciting. I am happy participating in the community around me. My neighbors feel that I provide historical context to people who think of the ’50s as ancient times. I never felt that we were the Silent Generation—we were active in our communities, active politically and socially, raising solid families, and trying to build a better society. Looking back, those years were hopeful and optimistic, in which we believed the world would be a better place for all after surviving the Depression, a world war, the Holocaust, and an atom bomb.

“I am grateful for my Cornell education—I learned much, but mostly I learned to love learning. But clearly my favorite memory is meeting Nat Myers ’49 , BA ’51, on the first day of classes in September 1949 at the Ivy Room in the Straight. Thank heavens my 10 o’clock class in the History of Labor Unions was dismissed because the professor had been delayed in returning to campus. I had never been to the Straight at 10 o’clock before, but when I went in, I saw a table with people I knew. As I sat down, I was introduced to Nat, who had returned from his Navy enlistment. At 11, he joined me on my walk across campus to Balch. We talked for more than an hour and listened to the noon Chimes. And that was the beginning of the rest of my life. We celebrated 55 years of being together until his death in 2004.”

Thank you for writing, Frances! We hope any classmates reading this will send us a letter. ❖ Class of 1951 ( email c/o Alexandra Bond ’12 ) | Alumni Directory .

Joanne Holloway McPherson writes from Findlay, OH: “I recently moved to a new apartment, the second one since I sold the house I lived in for 29 years in 2019. With each move I downsized, but I still have too many possessions. I try to adjust to the new technology, which is supposed to make our lives easier but, at least in my case, makes it more difficult. The devices constantly need recharging. My solution is to take a nap and recharge myself.”

James Strub writes from Colorado Springs: “I gradually became a mountain hiking machine, and I reached all 54 of the Colorado 14ers and Mount Whitney in California by 1961, all by the grace of God—sometimes with more grace required than other times (e.g., little things like lightning). I’m regularly using a USFS-provided ponderosa pine pole for balance, everywhere I go.” James enjoys teaching the Bible to the Judeo-Christian residents at MacKenzie Place, a nearby retirement community—something he’s been doing for 12 years now.

I gradually became a mountain hiking machine, and I reached all 54 of the Colorado 14ers and Mount Whitney in California by 1961. James Strub ’52

James adds, “I’m also keeping in regular touch by phone or email with daughter Heidi and her husband, Charley, in St. Augustine, FL. They are planning to come out here in April for my 95th birthday. And I’m keeping in close touch with son Jordan ’81 and his very gifted and delightful wife, Michele, who made a very successful career as a principal manager for Progressive Insurance.” Some of his favorite memories of Cornell were “playing the carillon and playing the four-manual pipe organ we used to have on the Bailey Hall stage. I also enjoyed the architecture professors, especially John Tilton 1913 , MArch 1914, whose favorite teaching was: ‘Remember—there is a difference between a Venetian blind and a blind Venetian.’”

Bernard Patten writes: “I am a systems ecologist, long retired from University of Georgia but not retiring. I’m continuing my research on an environmental system theory, ‘Network Environ Analysis,’ and the proverbial magnum opus, ‘Holoecology.’” ❖ Thomas Cashel, LLB ’56 ( email Tom ) | Alumni Directory .

Alan Perlmutter writes from California that his son, Ben ’12 , is taking over the family business: Big Sur River Inn. “After many years as a consultant in organizational development and 36 years as the general partner of the Big Sur River Inn, I am happy to pass the reins to our son Ben, who is taking over as managing partner of the family business. Ben will continue to welcome Cornell alumni from all over the world as they visit the inn, which is Big Sur’s first restaurant and resort,” says Alan. He adds that Ben is still singing with the Hangovers and is well prepared for being the host of the popular and historic inn.

Have you ever had a broken leg? Bob Neff , JD ’56, can sympathize. He spent much of the first half of last year hopping around on one leg while healing broken bones in the other one. He then made up for that confinement—while escaping the chilly weather in North Carolina—as he enjoyed sailing in the South Pacific.

Hospitalization and healing similarly took up half of last year for Caroline Mulford Owens , former Class of ’53 president. She reports that she’s now back to normal with a daily visit to the gym and participation in several community organizations. “I’m fortunate to be living on a beautiful lake with a view of the sunset across the water,” she reports.

I’m fortunate to be living on a beautiful lake with a view of the sunset across the water. Caroline Mulford Owens ’53

Jack Brophy has documented his time in the U.S. Navy with photos and lots of stories. He found his Cornell experience useful when assigned to develop recreational activities for the crew of the USS White Marsh . “The captain authorized the crew to empty a large storage room in the bow and create a lounge and recreation room for the sailors off-duty. They were motivated to make something nice, and they did, with fresh paint and new furniture. For the opening, I decided to organize a talent show. We had a pedal pump organ used for religious services, and I found a fiddler from the South who was fantastic. As the ship rolled, he wrapped his bow arm around a Lally column and played on undaunted. The other acts were entertaining but not as memorable. I guess this qualified me as ‘Recreation Officer.’”

John Nixon sends special thanks to the 148 members of the Class of ’53 who donated nearly $5 million last year, setting a new donor record for any 70th Reunion in Cornell history. Our class also recently donated $10,000 to the Class of 1953 Tradition Fellowship, which provides an annual scholarship for an incoming student. Your generous donations serve many worthwhile causes.

Please share your current news. We’d love to hear from you! ❖ Caroline Mulford Owens ( email Caroline ) | Jack Brophy ( email Jack ) | John Nixon ( email John ) | Bob Neff , JD ’56 ( email Bob ) | Alumni Directory .

As you read this column, Dave , PhD ’60, and Mary Gentry Call report that more than 20 classmates have signed on to celebrate our 70th Reunion on campus. Hopefully a few latecomers will join them with a month to go and put us over 26 attendees. This would be a record for a 70th Reunion. Dave and Mary have planned a fun and informative program with easy transportation to and from all the events from our class headquarters at the Statler Hotel.

This has been a slow month for classmate news, but we did hear from two of you and we thank you. Barbara Jones Jenkins of Northfield, MN, writes that she spends much of her time reading and keeping her email inbox below the 300s. She also served as the financial director of the Cannon Valley Elder Collegium and took several of their courses. On a negative note, Barbara says that she has been trying to improve her tennis serve after 50 years but recently ruptured her right bicep reaching for a volley. Let’s hope Barbara will soon make a complete recovery and get back to working on her serve.

Allan Griff ’54 , who was in the Sage Chapel Choir and the a cappella Chorus, has written a song about Cornell.

Allan Griff of El Cerrito, CA, who did a lot of formal singing in his undergraduate days, including in the Sage Chapel Choir and the a cappella Chorus, has written a song about Cornell, the melody of which is an Irish traditional folk song, “Roddy McCorley.” It brings back memories of our days on the Hill. Called “Leaders of Us All,” here are the lyrics:

“All around the world Cornellians go to do what we do best. / We teach, we build, we serve, we fix, we earn our keep and rest. / We’ve caught the pass of knowledge, and we’re running with the ball. / And it can’t be denied, we’re our people’s pride, the leaders of us all. / Wherever we Cornellians meet, it brings a smile and tear. / We’ve got a bond of friendship that cannot disappear. / We tell of days and nights we shared when we were growing still, / And we feel a little warmer when we think of our days on the Hill. / We remember the Straight, the statues on the Quad, the gorges, and the lake. / Teagle, the Taylors, Sage and the Libe, all these our memories wake. / Engineers, Hotelies, Aggies, and Arts, HumEcs, ILRs, stand tall / ’cause it can’t be denied, we’re our people’s pride, / the leaders of us all.” ❖ Bill Waters , MBA ’55 ( email Bill ) | Ruth Carpenter Bailey ( email Ruth ) | Class website | Alumni Directory .

Frank Baldwin (Ithaca, NY) is planting trees and doing trail management in Pine Tree Wildlife Preserve on East Hill. He also attends a local folk song club on Sunday evenings. He recalls that “our group in Ithaca and Cornell induced the National Episcopal Church to support the treaty to abolish nuclear weapons.” ❖ Class of 1955 ( email c/o Alexandra Bond ’12 ) | Alumni Directory .

I hope you all took the time to fill out and return the Share Your News form that was recently mailed to you. If you haven’t yet, it’s not too late! Please do send us your news—via the hard-copy form or the online news form —so our future class columns can be full of news from all of you. Whether your news is ordinary or extraordinary, we want to hear it! ❖ Class of 1956 ( email c/o Alexandra Bond ’12 ) | Alumni Directory .

With our undergrad status of in loco parentis , one restriction denied freshmen the right to have an automobile on campus. Do you recall how one classmate protested that rule? In spring 1954, Edward Jay Epstein brought a horse and buggy to campus. Whether it was because of that infraction or something else, Ed was asked to leave Cornell. He later returned to earn his BA in 1965 and MA in 1966, both in government. His master’s thesis on the official government investigation into the Kennedy assassination became his first book, Inquest: The Warren Commission and the Establishment of Truth (1966).

Ed continued his graduate studies at Harvard, earning a PhD in 1973. His doctoral dissertation became the book News from Nowhere: Television and the News (1973). Ed taught at Harvard, MIT, and UCLA, and then decided to return to New York City and to focus on researching and writing books. Known for his keen, independent mind, Ed later investigated U.S. intelligence and counterintelligence, the international diamond trade, the business of Hollywood, and the data leak by NSA contractor Edward Snowden.

Ed himself was the subject of the 2017 documentary Hall of Mirrors , which premiered at the 55th New York Film Festival. Of his many books and articles, his last book, Assume Nothing: Encounters with Assassins, Spies, Presidents, and Would-Be Masters of the Universe (2023), is considered this investigative journalist’s memoir. His recent passing in January 2024 was attributed to COVID. While he had no immediate survivors, he will be missed by all those friends who attended his many storied social gatherings at his Manhattan penthouse.

On the distaff side, we also note the passing of Ruby Tomberg Senie in September 2023. After earning her Cornell BS in 1957 and becoming mother to two sons, Ruby added a Cornell BSN in nursing (1975), an MA in teaching from Columbia University (1978), and a PhD from the Yale University Department of Epidemiology and Public Health (1984). She was an epidemiologist with the women’s health and fertility branch of the Centers for Disease Control in Atlanta when she was asked by then-Cornell President Frank H.T. Rhodes to be a panelist on the 1992 Reunion forum in Bailey Hall. The topic was “Ethical Issues in Healthcare: The Lessons of Tuskegee.” This coincided with our 35th Reunion, so likely some of us attended this discussion. (Special thank you to Cornell Archivist Evan Earle ’02 , MS ’14, for finding this information in an old Reunion booklet.)

In spring 1954, Edward Jay Epstein ’57 , BA ’65, MA ’66, brought a horse and buggy to campus.

Ruby also was on a 1996 panel at the Cornell Club in NYC. This forum, sponsored by the women of the Class of 1958, focused on lifelines submitted by hundreds of Cornell alumnae. Ruby was then a leading breast cancer researcher at Memorial Sloan Kettering Cancer Center in NYC. Ruby’s career continued and culminated as an associate professor at the Mailman School of Public Health at Columbia University.

On a personal note, Ruby and I met about a decade ago. Her dear friend, classmate Beth Ames Swartz , had come to NYC for the opening of her new art series at a gallery in Manhattan. At a restaurant meal that followed for our classmates, Ruby and I sat next to one another. Our paths had never crossed on campus, but we soon were deep in conversation. She told me of her book Epidemiology of Women’s Health (2013), a more-than-500-page tome that explored the major health challenges and conditions specifically affecting women. Ruby included contributions from leading authorities in the field.

She and I saw each other only a few times over the years when she rented a summer cottage in the Berkshires in Massachusetts, where she enjoyed the Tanglewood musical venue offerings. Through emails, we became fast friends. We last saw each other at our 65th Reunion. Ironically, it wasn’t breast cancer, but an undiagnosed tumor that, once discovered, gave her only a few more weeks of life. Ruby, a perpetual student, teacher, and author, had thoroughly enjoyed the rich culture of opera, museums, theater, and classical music so present in NYC. Earlier this month, Beth told me her new art series, Quantum Light, was inspired by Ruby. You can view her artwork here . Both Beth and I agree that it was our privilege to be close friends of such a remarkable woman.

On a lighter note, we saw Ron Dunbar and his spouse, Pru Dalrymple, at our 65th Reunion. Both having been widowed in the early 2000s, they found each other through Match.com and have been happily living together in Philadelphia for nearly six years. They are taking advantage of their good health to travel. Over a year ago, a Road Scholar trip had them island-hopping to see many ancient ruins in Greece. Last March they enjoyed a week in the Galápagos and then spent several days in a remote lodge in the upper Amazon watershed rain forest.

A more recent road trip included a visit with Bob and JoAnne Eastburn Cyprus , who have owned and lived for 30 years on a 60-acre farm near Nashville, TN. Ron and JoAnne had been high school classmates in Wellesley, MA. Ron and Pru fly to Seattle and Portland, OR, several times a year to visit Pru’s two sons and families. Ron’s Korean-born daughter and family live only 12 miles from Ron. After a long academic career, mostly in library science, Pru occasionally teaches online for Kent State University. Ron’s Cornell BEE degree remains in the background to the spreadsheet work he now does to help small nonprofits. ❖ Connie Santagato Hosterman ( email Connie ) | Alumni Directory .

Warren Wildes is living in St. Paul, MN, with his wife, Mary, spending three months of the year in California. He finds great satisfaction in working in the woodlands next door, raising wood ducks, and developing oak “nurseries” at the University of Northwestern, St. Paul, where they have lived since 1977. This passion continues as he and Mary fund Northwestern’s environmental science program, which places emphasis on the woods and the two lakes with campus shorelines. He is also a dedicated supporter of the Cornell Sapsucker Woods Ornithology Lab and participates in the FeederWatch programs while in California each winter. Warren has continued to express his interest in music by leading the Centennial Stompers Dixieland Band with Mary as vocalist, which plays at senior homes, churches, and centers in the Twin Cities metropolitan area. The band is in its 10th year with 18 performances in 2023, and excerpts can be found on YouTube .

Stefan Belman , DVM ’61, shares his favorite Cornell memory: “In Mann Library in 1959 I was seated in the informal reading room, and seated across from me was a most attractive blonde woman smoking. I walked over and bummed a smoke. A few minutes later I walked over to her again and invited her to walk with me to the pomology department and let me buy her an apple. Anita (Lesgold) ’60 , MS ’61, later returned to Sigma Delta Tau and told her roommate, Carrie Warnow Makover ’60 , about meeting this ‘interesting guy.’ Sixty-four years later, we have two children and four grandchildren.” Anita received her BS at Cornell, earned an MD from New York University’s medical school, then taught pediatric neurology there. Their son, Matt , DVM ’89 , practices in Salt Lake City and enjoys back country adventures. Grandchildren Ben ’19 , BA ’18, and Elisabeth ’18 graduated from Cornell with Phi Beta Kappa and summa cum laude recognition. Ben currently works for Amazon and attends Georgetown Law School. Elisabeth just graduated from Johns Hopkins School of Medicine and is training for surgery at Beth Israel Hospital and Harvard. Stefan and Anita move between Columbia Falls, MT, Huntington, NY, and New York City.

Arthur Shostak and his wife, Lynn Seng, moved nine years ago from Philadelphia to Alameda, CA, to escape winter and be closer to their grandchildren. Before retiring, Arthur was a sociology professor at Drexel University. Arthur published 34 books; his latest, published in 2017, is titled Stealth Altruism: Forbidden Care as Jewish Resistance in the Holocaust. After researching survivors’ memoirs and interviewing those living, he developed a strong “help” narrative, to be learned in the future alongside the “horror” narrative that now dominates. The book’s cover photograph illustrates his thesis: men in striped pajamas stand in rows, with two men in the front row surreptitiously supporting a collapsing man between them. Arthur indicates that altruism arises out of innate impulses in people, is supported by the tenets of Judaism, and was encouraged by rabbis who took on leadership roles. He is preparing two more books: a study of ways societies have of memorializing and a lengthy memoir. His favorite Cornell memory: earning the highest GPA in the ILR school, which leveraged a Woodrow Wilson Fellowship for a PhD at Princeton.

Philip Getter ’58 is still producing shows, most recently Hadestown, winner of the 2019 Tony Award for Best Musical.

Philip Getter is still producing shows, most recently Hadestown, winner of the 2019 Tony Award for Best Musical, which has been on Broadway since April 2019. A touring company first presented Hadestown at the John F. Kennedy theater in Washington in October 2021 and is still touring the U.S. and Canada . A new company held a successful opening of Hadestown at the Lyric Theatre in London’s West End in February 2024. The CD of the original cast production won a Grammy. Philip also produced Once Upon A One More Time , featuring Britney Spears’s music, and was co-producer of A Christmas Carol starring Jefferson Mays, and Terrence McNally’s Frankie & Johnny in the Clair de Lune starring Audra McDonald. Philip sits on several boards of corporations and foundations.

Philip’s wife, Elaine Sheinmel, passed two years ago. Elaine was his partner in Getter Entertainment, involved in producing Broadway shows. He is now a partner in Archer Entertainment Group with his stepdaughter, Courtney Sheinmel, who was a practicing attorney and wrote and published many young adult and children’s books. The partners are working on several future productions.

In February, Philip flew to London to see Hadestown, which was sold out and with such good prospects that the run was already extended. Courtney and her 4-year-old son, Archer, who loves musicals, accompanied him. Archer enjoyed his first airplane ride, double-decker bus rides, and packed performances of Hadestown . While in England, Philip spent a great deal of time with his oldest son, Douglas Getter, a London attorney, and his two granddaughters, Tesa, 17, and Sara, 20, both “brilliant, beautiful, and with great personalities.” He has two other children: Laura, who has three children, and Michael. ❖ Barbara Avery, MA ’59 ( email Barbara ) | Dick Haggard ( email Dick ) | Alumni Directory .

Linda Rogers Cohen sold her house in Great Neck—home for 56 years—and moved to the Upper West Side of NYC. “It’s an exciting change that eliminates worry about the roof when it rains and brings me practically next door to my daughter Carrie Cohen ’89 , her husband, Rick Lipsey ’89 , and their four children; brings me closer to the museums I love; and finds me surrounded by too many, too-tempting restaurants.”

Mary Gail Drake Korsmeyer also sold her house of 50+ years. She moved last November to Sherwood Oaks, a continuing care community in Cranberry Township, PA. “This community of some 300 residents is about 35 miles north of my old house and a short drive from my daughter’s residence. It has many active groups and services, including delicious meals, and is providing me with interesting new friends.” Mary Gail is retired from her partnership in the law firm of Peacock Keller in Washington, PA. Daughter Carol is a founding partner of Dupee Strengths-Based Consulting; son David is deputy director of the NASA Ames Research Center in Mountain View, CA; and son Keith is a professor of marine science at Hawaii Pacific University in Honolulu. In addition to grandchildren, she has three great-granddaughters and one great-grandson. About once a month, Mary Gail participates in a Zoom gathering with a baker’s dozen of ’59, ’60, and ’61 grads, all friends since Cornell and members of Delta Delta Delta, including Susan Kunkle Bogar , Sallie Whitesell Phillips , Linda Johnson Kacser , and Erna Fritsch Johnson ’61 .

Linda Rogers Cohen ’59 moved to the Upper West Side, where she is ‘surrounded by too many, too-tempting restaurants.’

Another move after 50+ years: Hardy Eshbaugh and his wife, Barb. They have moved to the Knolls, a retirement community in Oxford, OH. “Our children helped us with the move, which was accomplished with a minimum of difficulty,” writes Hardy. “We had an advantage in that our old house did not have an attic, basement, or garage, which meant we had not accumulated a lifetime of stuff. But there was still lots to part with, especially boxes of books! We have more or less settled in and have made many new friends. Even Roxy, our dog, is adjusting. Now it’s on to the next phase of our lives.” Hardy is professor emeritus of botany at Miami University in Oxford, known primarily for his research on chili peppers and on the flora and biogeography of the Bahamas.

About five years ago, Kate Sickles Connolly moved to River Woods, a continuing care retirement community in Exeter, NH. Prior to that, the retired clinical electron microscopist “lived a wonderful familial, professional, and municipal inclusion life associated with Dartmouth Medical School in Hanover, NH. I am enjoying an active life in both mind and body and hope to continue my Cornell connection virtually for years to come.”

A nominations committee is working on a slate of officers to serve our class for the five years following our Reunion on June 6–9. The final slate is expected to be completed in early May. Any classmate interested in serving as an officer is encouraged to contact our Reunion chair, Jerry Schultz ( email Jerry ). The list of nominees will be displayed at our Reunion headquarters in the Statler Hotel and presented at the class gathering on the morning of June 9.

Closing factoid: At the beginning of February, living ’59ers included 1,108 degreed and 460 non-degreed members—a total of 1,568 alumni. ❖ Jenny Tesar ( email Jenny ) | Alumni Directory .

Still living in North Falmouth on Cape Cod with his spouse, Patty, Leonard Johnson writes, “I was sorry to hear that Neil MacDougal had died. I first met Neil in seventh grade in Boynton Junior High in Ithaca. He was one of the good guys. Last fall I went back to Ithaca for the first time in 10 years. We had a great reunion with Carol Treman des Cognets and several of my other childhood pals. A highlight was lunch at the Inn at Aurora, a must-visit. My favorite memory is walking down through the Baker dorms and watching the sun set over West Hill. What brings him the most satisfaction? Says Leonard, “Patty and I are still cycling a lot—2,000 miles last year! I am still involved in the effort to preserve open spaces here on Cape Cod. I also really like negotiating complicated land deals.”

Edith Rogovin Frankel , who lives in Freehold, NJ, sadly shares, “I lost my husband over 15 years ago and my partner some three years ago, so life has taken a change. However, I’m fortunate to be in good health, I also have two daughters and seven delightful grandchildren ranging in age from 14 to 27. I’m also still doing research and teaching and will leave my New Jersey home to spend a month in Florida, where I’ll be giving courses at Florida Atlantic University and in both Boca Raton and Jupiter in February. This is an annual practice and preparing the lecture series (two different ones this year) is great fun.”

David Ahl , who lives with his wife, Betsy, in Morristown, NJ, reports, “With the pandemic behind us, my wife and I are spending more and more time on mission trips to Guatemala, Haiti, and Peru, helping to build small schools and homes. We have also been on cruises to the Philippines, Vietnam, Australia, Malaysia, Indonesia, Iceland, Greenland, and Hammerfest, Norway, the northernmost town on the planet. We like the smaller ships of Regent, and Betsy especially enjoys Silversea’s expeditions, which we’ve recently taken to Antarctica, Zanzibar, South Africa, the Seychelles, and some smaller ports in the Mediterranean. Unfortunately, excursions and construction work don’t agree with my advanced arthritis, so I’m looking at new hips and knees in 2024. My grandson Wyatt just started in the ECE College, so I’ll be visiting Ithaca more than in the past.”

Send your news to: ❖ Judy Bryant Wittenberg ( email Judy ) | Alumni Directory .

Guess what? Some of our classmates are going back to Cornell. It’s true. Read on to find out more!

First, we hear from classmate Gerold Yonas , who was interviewed for the Write on Four Corners podcast last August. A physicist and engineer, Gerold served as chief scientist for Ronald Reagan’s Strategic Defense Initiative, or “Star Wars,” project, and worked as a vice president at the Los Alamos National Laboratory counterpart, Sandia Labs. You can listen to the episode here .

Ruth Schimel in Washington, DC, is writing her eighth book, Small Steps to Your Continuous Thriving, the Best is Yet to Be . “I have published monthly on YourTango about personal and professional development. Dipping into the arts, I’m showing collages at a neighborhood exhibit, and creating ways to include them in my career and life management consulting practice. I’m active and presenting for TTNWomen on finding meaning and purpose with one’s storytelling, for example. Happy to share my newsletter, launched last year, curated for recipients. I’d love to hear from you.”

From Cindy Johnson Pratt about going back to Cornell: “It was a great thrill to attend the Cornell graduation of my eldest granddaughter, Susie Foster ’23 (whose grandfather is the late Bert Foster ’60 ), in environmental engineering. I had graduated in February 1961 (in three and a half years), so I never had graduation pomp and circumstance. I borrowed my granddaughter’s cap and gown and had my picture taken in front of DG on Triphammer Rd. Now I’ve graduated properly! We just downsized and moved to a retirement community in independent living only a few miles from where I’ve lived for the last 50 years on Lake Minnetonka.”

Steven Stein sent a photo of his Cornell family, nine of whom are Cornell graduates. The impetus of the family gathering was to attend the graduation of his granddaughter, Mimi Stein ’23 , and to celebrate the family’s gift of a bench in memory of his late wife, Susan (Volpert) ’62 , and himself. “Three Generations of Stein Cornellians, 1961 to 2023.” Wow!

From Pat Laux Richards : “ Jack ’60 and I were thrilled to attend our granddaughter’s Cornell graduation last May. Anderson ‘Annie’ Rogers ’23 graduated from Bowers CIS.”

And, lastly, Marco Minasso writes, “I have great memories of Cornell. So it’s with great pleasure that my granddaughter, Sofia ’27 , is now attending Cornell. That makes five of us alumni in our Cornell extended family: my daughter, her husband, me, and two grandchildren! I’m still in Yonkers and after 60 years in the wine business I still drink wine!” Good for you and Sofia! ❖ Susan Williams Stevens ( email Susan ) | Doug Fuss ( email Doug ) | Alumni Directory .

The College of Veterinary Medicine has established the Stephen J. Ettinger 1962 , DVM 1964, Scholarship in honor of this outstanding veterinarian whose broad-reaching influence has impacted the college and the veterinary profession.

Stephen is considered a founder of specialization in veterinary medicine, having helped establish the American College of Veterinary Internal Medicine and serving as president of cardiology in that group—from which he received the inaugural lifetime specialty achievement award . He has authored hundreds of journal papers and key foundational textbooks, including Canine Cardiology (1970) and the Textbook of Veterinary Internal Medicine , the ninth edition of which published in January 2024. He has served on the Cornell University Board of Trustees, the Dean’s Leadership Council, and the Advisory Council and received a Daniel Elmer Salmon Award for Distinguished Alumni Service in 2010.

From San Antonio, TX, John Graybill , MD ’66, sends word that he has retired as emeritus professor of medicine. “I was chief of my division of infectious diseases for six years at University of Texas Health Science Center in San Antonio and had about 250 peer-reviewed publications, mostly in medical mycology and with AIDS patients, and a lot of non-reviewed publications. I left all of that in 2008. My wife, Sue, and I continue to enjoy retirement. For 30 years we have done medical volunteer work in Mexico, Bogotá, Costa Rica, and Guatemala. We have aged out of the volunteer work but have bought a home in Guatemala and spend 3–5 months a year there. With the hot summers here in Texas, it is great to be in Guatemala at 5,300 feet in the mountains, with a climate like Denver. We love Latino culture. My addictive hobby in Guatemala is growing orchid species, and Guatemala is a great place for it. I tie them to tree branches and have a few on tables, a thousand in all. Up in Texas (not healthy for orchids), I have gotten into HO and N gauge model railroading. My N gauge is coffee-table sized and can go with us when we move sometime, if ever, to a retirement home. I am finally reaching the point of knowing how outdated I am in my profession of clinical academic medicine and am stopping medical journals, medical societies, and ultimately my medical license. Age will claim us all, but orchids and model railroading are good hobbies to have.”

John Abel retired from the Cornell civil engineering faculty in 2004 but continues to live in Ithaca on the west shore of Cayuga Lake. His wife, Lynne (Snyder) , died in 2006, and since 2010 his son Bill has lived with him. “Together we enjoy movies, TV series, travel, and Cornell sports events, as well as lakeside living. We spend holiday seasons with daughter Britt Abel ’91 and her family in the Twin Cities. After 12 years on the board of the Cayuga Lake Watershed Network (mission: to advocate for the health of Cayuga Lake and its watershed in a changing world), I have decided to step aside this coming August. I served as treasurer during eight years of growth, but my proudest accomplishment was through working with three talented interns from Cornell, one each in three of the last four summers. I guided their creation, revision, and updating of two handbooks advising watershed residents how to help alleviate climate change while preserving the quality of the lake.

I am excited to have completed the conversion of our home to fully electric. John Abel ’62

“While writing about the effects of extreme weather on our lake and watershed, I decided to ‘walk the talk’ on climate change. I am excited to have completed the conversion of our home to fully electric using community-subscription solar power from a photovoltaic farm in nearby Newfield, NY. I installed deep geothermal heat pumps, discarded our gas furnace and water heater, upgraded our heating and electric infrastructure, and replaced our gas dryer with a ventless hybrid electric version and our stove with an induction stovetop. We were able to turn off our natural gas connection! I also drive a plug-in hybrid car since 2017.

“I remain active as former president and advisor for the International Association for Shell and Spatial Structures (IASS), my professional association involving engineers, architects, and researchers. This coming year, after a pandemic hiatus of four years, I will resume international travel to annual IASS symposia, this year in Zurich and next year in Mexico City.

“Daughter Britt, on the faculty of Macalester College, will be teaching in Vienna again this spring semester (fourth time since 2009), and her husband, Scott Burglechner ’91 , is able to join her thanks to his remote work possibility for U.S. Bank. Grandson Will graduated from Colorado College in May and is starting his second social-service job in the Twin Cities while deciding about long-term plans. Granddaughter Natasha Burglechner ’25 will spend her junior spring semester at Cornell’s program in Seville, Spain.”

I’d be in denial if I didn’t admit that we are all beginning to wind down. Still, it is lovely to read the bits and pieces you send along detailing your lives and activities. Please keep them coming—until we can’t.

There’s a snowstorm raging outside my NYC window as I write this late spring column. To bridge this gap, I urge you to check out our class website , where you will find entries posted in a timely fashion in their entirety in our “Classmate News” section. We love to post your photos, so send them along too. ❖ Judy Prenske Rich ( email Judy ) | Alumni Directory .

I think my first sentence for the Class Notes column should be: Please send me news via email at this link ! I am running low on news. The news in this column comes from Christmas cards that I received from Cornell classmates.

Barbara Hartung Wade , MEd ’64, writes, “I was called out of retirement again, to teach two seventh-grade Spanish classes until the end of June 2023.” Even though she was employed, she and her daughter, Kimberly, went to Cancún in February, followed by a trip to Florida with Kimberly and her husband, Bernard. In September, Barbara and a friend had a good trip to Falcon’s Resort in Punta Cana for a week of sun, fun, and golf. In November the family went to their timeshare at the Westin Lagunamar in Cancún for a two-week getaway. “On the third evening there, it was dark and I tripped on an elevated round light in the cement that wasn’t lit and fell. With second-degree friction burns on arms, knees, and shoulder, I was hospitalized for 12 hours with painful surgery to close and clean the wounds.” Barbara had more to say about paying the hospital bill and then the scam involved when she had to change her flight home on Delta. “I’m recovering slowly but grateful it wasn’t worse. These bad experiences are what can happen at our age! We all learn lessons from them.”

Bill and Frankie Campbell Tutt live in Colorado Springs. Frankie writes: “We celebrated our 60th anniversary at our Ohio farm with the entire Campbell clan. We sold our home of 48 years and downsized to a gated community that we love. Going from 5,000 square feet to 3,400 square feet took some dumpsters, but we are in and can accommodate six guests.”

George Ehemann , ME ’66, and Diane Siegenthaler live in Lancaster, PA. “We enjoy visits from grandchildren including our engineering student enrolled at Cornell. We are active in church activities and German Club chorus. Our 60th wedding anniversary is coming up in the fall of 2024. My favorite memory of Cornell was the climb up the frozen gorge at Buttermilk.”

On the Parisian front, I’m teaching at Sorbonne University in the master’s program in orchestra management. Mary Falvey ’63

Mary Falvey splits her time between San Francisco and Paris, France. “On the Parisian front, I’m teaching at Sorbonne University in the master’s program in orchestra management. I gave a seminar there in 2019 and this year the professor asked if I would teach part of the course while he is on sabbatical. I’m giving six seminars together with colleagues of the San Francisco Symphony. I’m continuing as an entrepreneur-in-residence at INSEAD, a global business school in Fontainebleau. I also helped a French startup in the quantum dot space raise Series A financing. This fall I plan to rent a house in Brittany as a successor to my country home in Calistoga, which I sold in 2022, and to add to my three months a year in France. My oldest grandson, Colin, who holds a master’s in environmental engineering from Stanford, was married last year.”

We had dinner before Christmas with Jim , MD ’69, and Christine Newton Dauber . They are now living in a nice senior living facility. Jim writes: “After a 20-year hiatus, Chris and I returned in April to see Monument Valley, Lake Powell, Zion, and Bryce Canyon along with my older sister and her husband. We still spend part of the summer in our condo in Hillsboro, OR. Our Thanksgiving celebration was quiet but appreciated since Nancy Deeds Meister produced a traditional feast for us and her husband. We spent Christmas here in Tucson but traveled to Hillsboro for New Year’s Eve.”

Thanks to finding our home phone number through Mr. Google, we had a wonderful phone conversation with Tom Stirling , JD ’69, a week ago. Tom lives in Honolulu with his wife, Anita. Two recent milestones for Tom: “Upon my February 28 retirement as a Honolulu lawyer, Anita and I were off on a tour of Vietnam and Cambodia at considerably greater expense than my first tour (all paid for by the Army 57 years ago). Also, I just made my 200th blood donation (first time was at Cornell when I was told donors could get out of ROTC drill that day). Since each donation can be used for up to three recipients, I may have more than 500 blood relatives out there somewhere.” ❖ Nancy Bierds Icke ( email Nancy ) | 12350 E. Roger Rd., Tucson, AZ 85749 | Alumni Directory .

Welcome to my last column before our 60th Reunion—so I’m hoping if you have news for your classmates that you will see them at Reunion and regale them in person. Meantime, here’s the news I do have.

Wayne Mezitt , MBA ’66, who lives with wife Elizabeth (Pickering) ’65 in Hopkinton, MA, catches us up on a lot! He writes, “In July 2023, Beth and I published a book, For the Love of Gardening , which describes our family experiences as we commemorate the 100th anniversary of our family business, Weston Nurseries. I retired from full-time management of the nursery in 2007, and since then, our son Peter and his wife, Karen, have managed all operations of the business started by my grandfather and grandmother in 1923, where I still serve as board chairman. I also enjoy ‘playing’ at Hort-Sense, the tiny business I started in 2010 as a personalized horticultural production and advisory service.

“We’re justifiably proud that we’ve been successful in shepherding Weston Nurseries into our fourth generation of family ownership. Passing the business along to our fourth generation enables Beth and me to continue exploring our passions for horticulture, travel, and family/friend relationships.

“I am editor-in-chief for the Leaflet , Massachusetts Horticultural Society’s monthly member electronic newsletter. I also serve as chair of the Massachusetts Invasive Plant Advisory Group, a voluntary collaborative representing organizations and professionals concerned with the conservation of the Massachusetts landscape. Beth manages all our family and social relationships and serves as chair of our Hopkinton Public Library friends organization.

“Our youngest son’s family lives near our ski house in Vermont, and our other three children live near us, enabling us to spend time with our nine grandchildren. In November Beth and I visited New Zealand, where Beth’s dad was born, reconnecting with relatives and enjoying their springtime, just as our Hopkinton winter was setting in. We’re now discussing the possibility for traveling to Latvia, the Mezitt family’s origin, in July, avoiding Hopkinton’s oppressive humidity and heat.

I’ve begun composing a new book about Rhododendron ‘PJM,’ a now well-known plant that my dad, Edmund Mezitt ’37 , BLA ’39, developed decades ago. Wayne Mezitt ’64, MBA ’66

“I’ve also begun composing a new book about Rhododendron ‘PJM,’ a now well-known plant that my dad, Edmund Mezitt ’37 , BLA ’39, developed decades ago at Weston Nurseries. Peter and Karen have just added another garden center operation to our Weston Nurseries ‘family,’ all in Massachusetts, to now include Lincoln, along with Chelmsford, Hingham, and Middleborough, complementing our main base in Hopkinton. We applaud their commitment and enthusiasm!

“We still maintain contact with a number of Wayne’s Lambda Chi Alpha fraternity brothers and Beth’s Kappa Alpha Theta sorority sisters, although several have recently passed away. With all that keeping us busy, we’ve not paid much attention to most aspects of our Cornell experience, but we’ll welcome updates with any of our friends who have been out of touch.”

Next is David Evans , who with wife Sherry lives on St. Simons Island, GA. He writes, “I retired in 2019 after a career in project management services for large corporations providing governmental services to the U.S. government, while also spending 31 years in the Air Force and Air National Guard as a fighter pilot. Currently, Sherry and I are enjoying our retirement in the wonderful beach community, which is 80 miles south of Savannah, where my Welsh ancestors arrived in the 1650s. A shout-out to my freshman roommate Bill Lacy .”

In other news, Phyllis Rivkin Goldman , MS ’67, and Michael Troner are enjoying their retirements in Boston and Miami, respectively. They are co-chairs of the Class of ’64 Annual Fund and are busy planning to reach out to all of our classmates to support the Annual Fund and in particular our Class Legacy: the Class of 1964 JFK Award for Cornell seniors entering public service. They hope for a big turnout for our 60th Reunion and an even bigger response to their requests for support. Each of them has grandchildren at Cornell and the Troners especially look forward to the graduation in May of granddaughter Rachael Ricisak ’24 before our Reunion.

Lastly, a message from our class president, Ken Kupchak , JD ’71: “Sixty years ago this June we shed our obligatory bonds to Cornell. Celebrate we shall at Reunion. Our ‘modest’ footprint, however, continues and remains indelibly printed in Cornell’s story. This is especially true with respect to the then- and now-timely JFK Award. We have just transitioned this charge to a self-perpetuating board composed of our great awardees. This ensures that the Cornell Class of 1964’s influence will survive our playing time on Cornell’s fields. Hope to see you this June. If you ask nicely, I may save some healthy milk punch for you!”

That’s it for now. On behalf of our class officers, we hope to see you at our 60th Reunion on Cornell’s campus on June 6–9, 2024. As for your news, please keep it coming! Update me by email, regular mail, our class website , or our class Facebook page . ❖ Bev Johns Lamont ( email Bev ) | 720 Chestnut St., Deerfield, IL 60015 | Alumni Directory .

From Joan Hens Johnson : “There were 21 people attending the Cornell annual Florida luncheon arranged by Judy Kellner Rushmore in January. We all enjoyed sharing stories and congratulating the class gift committee on the success of the fall 2023 pilot project of our well-being coaching at the Skorton Health Center. This initiative, funded by the Class of 1965 student mental health fund, will continue because the program is so impactful. Jeff Kass , the leader of our gift committee, provided me with an excellent summary that I shared at the luncheon. He wrote, ‘All results thus far indicate our class gift is funding a program with real and positive impact on the lives of current and next-generation Cornellians.’ Students overwhelmingly supported these statements: ‘I am making progress toward my well-being goals’; ‘I am noticing positive changes in myself that are keeping me encouraged’; ‘I am substituting more healthy/helpful thoughts and behaviors for less healthy/helpful thoughts and behaviors.’ The news of the successful pilot program created a positive buzz among all those at the luncheon.”

Commenting on the highlights of the past year, Myron Jacobson spoke of the river cruise he and Michele took from Amsterdam to Budapest “even though the Danube dried up as we finished with a bus!”

Jim Bennett writes, “Failing any meaningful hobby, I’m looking for my fifth consecutive full-time role to give back to Northeast Ohio. It looks like it will be a major initiative funded by the City of Cleveland and private monies to assemble and remediate 1,000 acres of abandoned inner city properties, market individual sites to companies, and provide jobs for a number of economically disadvantaged residents along a five-mile inner city corridor.”

George , MD ’69, and Judy Arangio spent last October in the Italian regions of Piemonte and Tuscano, especially appreciating the Lucca symphony playing Mozart and Puccini operettas and the international truffle festival in Alba, as well as Barolo, Barbaresco, Moscato wine tasting, and visiting sites on Lake Como.

Dave Bridgeman relates, “Karen and I just celebrated our sixth wedding anniversary. The last six years have been the best of our entire lives! The cruises and vacations are nice, but the best part is getting to be with each other in perfect love, peace, and harmony.”

After four years’ absence, Stephen Appell ’65 traveled to Ithaca via the Campus-to-Campus bus for a weekend of Cornell basketball.

Judy Rushmore and Dave Koval and Linda and Walt Gadkowski are moving to Vi at Bentley Village in Naples, FL, where Ashok , ME ’65 , and Fay Thomas Bakhru , MAT ’66 , are already in residence. Before moving, Judy and her family are touring South Africa.

After four years’ absence, Stephen Appell traveled to Ithaca via the Campus-to-Campus bus for a weekend of Cornell basketball—and this time, to root only for the women’s team. Having apprised the Statler staff of the purpose of his visit, they welcomed him with a goodie bag of Cornell souvenirs, including a basketball cap, and made him feel like a VIP. Steve watched the women players defeat Dartmouth the first night and give a good battle to a formidable Harvard team the next. He was gratified that the coaches and players expressed appreciation for his show of support. Steve also saw the women’s team play at Columbia earlier in the season, and on February 10 he traveled to New Haven to see the outstanding men’s team give Yale all it could handle before succumbing in the last four seconds, 80–78, in an epic battle of undefeated Ivy teams.

Steve Hand is another avid Cornell sports fan. He notes that he is a fixture in Ithaca at all Cornell women’s and men’s hockey games. “Steve Appell joined me last weekend for women’s basketball, hockey, Glenwood Pines, and Purity ice cream.” In January, Steve Hand went on a trip to Disney World with his wife, son, and two grandchildren and everyone had a fun time. Thanks to Steve for managing the Cornell Class of ’65 webpage, which has information about classmates and past Reunions and photos, and also the link to find the Cornell Class of 1965 Freshman Register.

The subject of health is important all through our lives, and Bud Suiter , MBA ’67, has just finished reading two books of interest: Young Forever by Dr. Mark Hyman ’82 and Drop Acid by Dr. David Perlmutter. He states: “The books summarize amazing research results, particularly recent stuff over the last five years.”

Applause to Alan Lockwood , MD ’69, who received a Lifetime Achievement Award from Physicians for Social Responsibility in 2023. Alan is a CAAAN volunteer and frequent contributor to the Lifelong Learning series at Kendal at Oberlin.

Thanks to everyone who has contributed to the column and please continue to forward your news to: ❖ Joan Hens Johnson ( email Joan ) | Stephen Appell ( email Stephen ) | Alumni Directory .

As we near two years to our 60th Reunion, our classmates continue to report on the various jobs, activities, and travels that make up their lives. Susan Porter Bass never imagined working in farming but reports working in a vineyard and winery. Dick Lockwood , MNS ’68, spent 20 years as a part-time faculty member at Brandeis University’s Heller School. He was a union organizer with classmate Larry Bailis at Brandeis for adjunct and non-tenured faculty.

Currently Dick is a member of the board of directors of the Bullough’s Pond Association, a neighborhood environmental defense organization to keep the pond from becoming a swamp. His current hobbies are ice skating and swimming. Dick visited Vietnam last year with his oldest son, Dan ’94 , to show him the village in the Mekong Delta on the Cambodian border where he lived from 1968–70 with the International Volunteer Organization. He reports that 58 years have changed the country for the better. The family travels to Brazil every year to visit his wife’s family in Salvador, Bahia.

John Cobey has been practicing law for 55 years. He is also chairperson of Neighborhood Health, a charity that provides medical services for the homeless. He also chairs the Hamilton County (OH) Law Library, is on the Art Academy board, is an officer of the Literary Club (the oldest one in America), and is on the Rockdale Temple board. In ’66 he never imagined that he would someday have a lawsuit about an outer space problem—the world has certainly changed. John and his wife have two successful and happy sons.

Ira Sadoff retired as Arthur Jeremiah Roberts Professor of Literature at Colby College in 2015. He remains an active and publishing poet. In 2020, his ninth collection of poems, Country, Living , was published by Alice James Books. This past December the Academy of American Poets published a new poem, “ Thank You .” Ira is passionate about classical music and jazz. He lives near Woodstock, NY, where there’s “good music galore.” He never imagined he would be spending his life as a professor teaching literature and poetry, and writing poetry and criticism, for 50 years. At Cornell, he describes himself as a “poor student” taking all the wrong courses with the wrong professors. At the end of his junior year, he finally had the courage to try writing poetry. He feels blessed to have this lifetime passion.

Dick Lockwood ’66 , MNS ’68, visited Vietnam last year with his oldest son, Dan ’94 , to show him the village where he lived from 1968–70.

After 36 years, Marty Skelly Remis retired from the CDC as a Public Health Advisor, Quarantine Division. She spent 33 years at the Chicago Quarantine Station and three years as Deputy Bureau Chief, Quarantine Branch, Atlanta, GA, retiring in 2008. Although she never imagined living in Florida, she is active in many activities in Sarasota. They include NAMI Sarasota and Manatee Counties, Meals on Wheels, All Faiths Food Bank, Habitat for Humanity, and Key Chorale. She now enjoys playing tennis and mahjong. She and her husband have time to travel. Trips included an Alaska cruise, a vegan Caribbean cruise, and driving 192,000 miles in their Class B RV after she retired. In the summer, they spend time on Tuscarora Lake in Erieville, NY, with the whole family. The family visits them in Florida in winter.

Nancy Decker Stephenson is a retired registered dietician and office manager for a veterinary practice. Her activities include volunteering with meals for the homeless and the DAR. Hobbies now include gardening, reading, classical piano, and travel. She never imagined going to Japan and China. Other countries visited include family visits in the Netherlands, plus trips to Norway, Switzerland, France, Italy, Greece, Hungary, Austria, Germany, Scotland, Israel, and Colombia. Family activities include annual reunions, vacations, and holiday/birthday get-togethers.

Donna Swarts Piver is a retired educator. She volunteers at a nursing home and critical care facility. She continues to recover from a massive stroke and is making great progress with bi-weekly physical therapy sessions. In mid-December, she traveled to New Jersey to visit Anne Evans Estabrook ’65 , MBA ’66, and other friends. Donna recently moved to the Glenridge, a continuing care complex in Sarasota, FL. She reports that she loves it and the people.

Debby Kirschner Wolf sadly informed us of the passing of her husband, Marty ’63 , DVM ’66. They met at Cornell and were married for 57 years. They were blessed with two children and six grandchildren. Leith Mullings passed away in December 2020. She was an authority on the foundations of racial and class oppression and the intersectionality of race, class, and gender.

Paul Mlotok passed away in March 2021. He was an oil industry analyst who worked for various companies and was an advisor to the Department of State, the CIA, and various OPEC oil ministers. Anthony Rerecich passed away in June 2023. He was a computer programming professional who worked for various banks and computer companies. He was a veteran and accomplished runner, and he enjoyed sailing and genealogy. ❖ Susan Rockford Bittker ( email Susan ) | Pete Salinger , MBA ’68 ( email Pete ) | Alumni Directory .

Larry Dominessy , ME ’68 (Louisville, TN) reports: “I have been retired since my early 50s. I have remained active but have removed working for money from the equation. I have happened on some broad experiences in the military, Peace Corps, and Foreign Service, which built my confidence beyond the impression of a business teacher at Cornell.

“When I studied engineering at Cornell, as a fluke I took an elective in the business school. The teacher was a retired business executive. He had us write a paper and gave personal interviews to critique what we had written. I was in my fifth year at Cornell but basically, he called me an ignoramus with no ability to express myself. It shocked me but it was hard to argue with.

“I enjoy my informal study of recent history and wish I would have known what I am learning now earlier in life. All of the people whom I would like to ask questions of are dead. I guess I can’t blame myself because most of us are too busy with life to appreciate what is going on (good and bad) until it is too late.

“At Cornell, I got the distinct feeling I was in over my head, at least the first couple of years. Struggling with money certainly did not help. I took ROTC, which seemed to be a refuge from tough engineering courses. I did well the first year until I realized I just did not have the time to put in it, and ROTC did not count toward graduation anyhow. I finished second from the bottom of my ROTC class (the other person had a problem keeping in step!), but I still got a commission and a ticket to Vietnam. However, in the end I would not trade my experience of four years in the Army for anything.”

Peter Buchsbaum (Stockton, NJ) writes: “My wife, Elaine, and I, now married 56 years, are joining Dick and Eileen Barkas Hoffman ’69 for a cross-country rail trip in mid-May. Meanwhile, I’ve continued work with Jewish organizations, having been elected to the executive board of the World Union for Progressive Judaism, and I also joined the Commission on Social Action of the Union for Reform Judaism in the U.S.

We spend summers and parts of autumn at our island home near Acadia National Park in Maine. Peter Buchsbaum ’67

“We spend summers and parts of autumn at our island home near Acadia National Park in Maine and are completing 50 years of living in still semirural Hunterdon County, NJ. Our first grandchild is now a 1-year-old living in Rockville, MD. I’m somewhat creakier but still okay, which means I had to do some snow shoveling recently.”

Roger Abrams (University Park, FL), who was professor and dean emeritus of Northeastern University School of Law, previously dean at Rutgers University and Nova University law schools, and on the faculty at Case Western Reserve University School of Law, passed away last November 12. A graduate of Harvard Law School, Roger was an expert on sports and labor law and legal education. He served as a salary arbitrator for Major League Baseball and was a permanent arbitrator for the television, communications, electronics, and coal industries.

Roger practiced labor law, was a civil rights litigation attorney with Boston firm Foley, Hoag & Eliot, and wrote books on alternative dispute resolution, labor arbitration practice, and the business and history of sports, among other subjects. His Sports and the Law has been cited as the leading sports law casebook. A colleague, Libby Navarrete, recalled that Roger was the epitome of a great lawyer, dean, and arbitrator. “He was a very good listener, and always extremely careful and sound with his decisions. He handed out justice with precision.”

Lawrence McGuinn (Westfield, NY) died last November 20. “After graduation,” the Jamestown, NY, Post-Journal reported, “he took over the management of the Wilson Hill Farm and later expanded to establish Lin-Ary Vineyards. Larry enjoyed his lifetime career as a viticulturist. He served for a number of years as secretary and as president of the Westfield Maid Cooperative. Larry was a life member of the Sigma Pi fraternity. He was also a member of the Chautauqua County Cornell Cooperative Extension. Larry enjoyed his family, grape farming, sunsets over Lake Erie, photography, wildlife, the Buffalo Bills, and dogs.” ❖ Richard Hoffman ( email Richard ) | 2925 28th St. NW, Washington, DC 20008 | Alumni Directory .

With spring upon us and summer close by, I have more news from our classmates to share—but we’d like even more news, so please let us know where you are and what you are doing!

Corinne Dopslaff Smith has brought us up to date. She writes, “So very many decades have flown by since graduation that I don’t think I have submitted an update since serving as class correspondent way back in the ’70s.” Corinne remains active in our class and currently serves as our website community manager, a job that did not exist in the ’70s! She will be using this position to help connect classmates who want to reconnect with those they have lost contact with. Expect to hear from Corinne soon as she prepares to embark on this new initiative.

Corrine writes, “The first three decades of my working career—starting immediately after graduation—were spent at IBM, working both with clients internationally (favorite activity) and in internal marketing (not so favorite). About a month after full retirement in 1998, I was bored and initiated a new career, winding up at Milliman, an international actuarial firm. On the personal side, in 1971, I married Bob Smith, the most interesting private pilot/sailor/raconteur/fierce friend you would ever want to meet. No kids, but many, many wonderful doggies. Bob and I attended every Reunion but one, and he grew to love Cornell and all our dear Cornell friends and their spouses as much as I did. We loved living both down the shore in New Jersey and in our apartment near Lincoln Center in NYC. Bob sadly died last April. He is missed by all who knew him—most of all me. I continue to live down the shore (in Spring Lake) and in Manhattan.” Seven DG sisters from our class connect each month with Bernice “Neecy” Bradin as Zoom leader. The group includes Corinne, Neecy, Mary Sander Alden , Mary Jo Bastion Ashley , Beth Deabler Corwin , Susan Clark Norwood , and Janie Wallace Vanneman .

Jay Waks ’68 , JD ’71, his wife, Harriet, and classmate Joan Gottesman Wexler ’68 took to the sidewalks, logging nearly 2,300 miles through year-end 2023.

Susan Norwood writes that after a few years at Tulane University, where she received an MEd in counseling (1972) and served as the program director in the University Center, in 1973 she became the director of guidance and college counseling at an independent school in New Orleans. She was also active as a traveling ERB test consultant, a role she continued in for several years after leaving the independent school in 1995. “Even as I developed a practice as a family mediator, restorative practitioner, and trainer, working in juvenile and family courts, eventually I circled back into schools to apply mediation skills to practice restorative discipline—an alternative to suspension and expulsion. Now pretty much retired since 2016, my time is taken up volunteering for the New Orleans affiliate of the National Alliance on Mental Illness, serving on that board as well as conducting family education and support groups and Mental Health First Aid trainings.” Susan also serves on the board of the Center for Restorative Approaches, which provides training and tools for restorative approaches in schools, workplaces, and the criminal justice system. With all that she continues to do, Susan writes that she has the most fun on any given day playing pickleball!

Jay Waks , JD ’71, his wife, Harriet, and classmate Joan Gottesman Wexler turned pandemic isolation into outdoor social occasions by taking to the sidewalks and paths on a wide variety of routes in and around their Larchmont-Mamaroneck, NY, communities, logging, so they say, nearly 2,300 miles through year-end 2023. And Jay reports they are still at it!

Happy to report that Sharon Lawner Weinberg , PhD ’71, and I, Steve , MBA ’70, JD ’71, attended our fourth annual South Florida TEP reunion this past winter, with two other members of our class present, Jane Frommer Gertler (and husband David ’67 , ME ’68) and Gordon Silver . The event was hosted by Richard Marks ’67 , MBA ’68, and wife Carol. Also attending were Rick Bailyn ’67 , MD ’71, and his significant other, Margo Printz-Brandt, Ted Feldmeier ’67 , BS ’71, and wife Joan, Norm Stern ’66 and wife Jo, Norm Stokes ’66 , Lloyd Richard Dropkin ’66 , MD ’70, and wife Joan, Ralph Janis ’66 and wife Rhoda, Norm Meyer ’66 , Mike Caplan ’66 , and Myron Jacobson ’65 . A great time was had by all.

I look forward to receiving more news and updates from all of you! Please email me with news about you and your family that you want to share with our classmates. ❖ Steve Weinberg, MBA ’70, JD ’71 ( email Steve ) | Alumni Directory .

Our 55th Reunion: June 6–9, 2024! Our Reunion chairs, Cindy Nixon Dubose and Sally Knowlton , have been hard at work planning a great Reunion. Cindy writes: “We’ll celebrate our 55th Reunion on June 6–9, and we hope you’ll join us! It will be a great opportunity to enjoy our class events and gatherings, attend University lectures and forums, explore the beautiful campus, and, of course, reconnect with friends and make new ones! We hope you’ll stay in touch, encourage other classmates to attend, and plan to celebrate with us! The registration materials and schedule of events will be sent in April and will have all the details of our weekend. (By the time you read this, you may have already received the materials.) There is early-bird pricing for registration until May 15, so we hope you’ll register early.

“Our class headquarters will be in the brand new, fully air-conditioned Toni Morrison Hall. It has spacious common rooms for socializing and gathering, an incredible dining hall, and a very convenient location in the new North Campus area. For on-campus housing, the single and double rooms are arranged in suites, also with plenty of space and amenities. Our wonderful registration chairs, Larry and Nancy Jenkins Krablin , will be handling the room reservations and the accommodations.

“For those arriving Thursday, we’ll have a casual welcome dinner buffet in the HQ and a traditional ice cream social in the evening. We’ll join together for breakfast in the Morrison Dining Hall on Friday, Saturday, and Sunday mornings. Everyone can attend and participate in our Friday morning class forum with Cornell historian Corey Earle ’07 . We’ll enjoy dinners (catered by the Heights Restaurant) on Friday and Saturday evenings, and a barbeque lunch with entertainment by the Sherwoods. In between our planned events during the weekend, there will be lots of time to explore campus, revisit familiar places, see new sights, and attend other engaging University events and programs. We hope to see you in June to celebrate our 55th together.”

Doug Mock ’69 is very talented with the guitar, harmonica, and kazoo, and if we’re lucky, we’ll get to see and hear him at our Reunion this June.

What a wonderful schedule that’s been planned by Cindy and Sally. If you’ve never been to a Class of 1969 Reunion, it’s never too late! We’re a welcoming group. It’s also worth coming to see all the new buildings and other changes on the Cornell campus.

Our presidents, Greg Baum and Robert Tallo , are asking everyone to consider being an officer for our next Reunion cycle—leading up to our 60th! We are looking for most positions, so feel free to nominate a classmate; we also accept self-nominations! We are definitely looking for a class correspondent.

We heard from our classmate Richard Hagelberg . He has been the CEO of Kidstuff Playsystems for the past 41 years. His wife thinks he should retire! Richard and his wife love to travel, especially on river cruises. His favorite Cornell memory: the camaraderie of the Big Red Band!

At our Zoom meeting this past January, we were entertained by classmate Doug Mock , who played folk songs from the ’60s and ’70s. He’s very talented with the guitar, harmonica, and kazoo, and if we’re lucky, we’ll get to see and hear him at our Reunion this June.

Lastly, fill in those forms and come to Reunion 2024! ❖ Ingrid Dieterle Tyler ( email Ingrid ) | Class website | Alumni Directory .

As I sit at my computer and assemble this column, the most amazing thing currently is that it is the beginning of February and the outdoor temperature here north of Chicago is above 50 °F, with absolutely no piles of dirty snow. It’s more like early spring than mid-winter here.

February is always time for the Cornell Alumni Leadership Conference (CALC), a gathering of class officers and other alumni, this year in Baltimore. Although I won’t be attending, CALC also indicates some milestones for class events. It will be preceded this year by an online meeting of our class officers with one of the most significant items on the agenda being preparations for our 55th Reunion, June 5–8, 2025. Even though, as I write this, Reunion is more than a year away, preliminary planning has already begun. If you have any thoughts or ideas, and wish to be involved or to volunteer, contact Sally Anne Levine , our class president. Find her contact info (and others) through the Alumni Directory .

Ellen Celli Eichleay (Pittsburgh, PA) writes, “I still live in Pittsburgh, where I have always lived, and have a large contingent of friends and family. Since the age of 37, I have walked two miles a day so I am in a lot better shape than many of them—so I spend a lot of time cooking, driving, and helping where I can. With the sudden realization that my twin grandsons were now the age of my father and his brother when they came to the U.S. in 1913, last year I wrote a book for them about the brave journey my grandparents took to come to the U.S. At the age of 30, with two little boys and speaking no English, they started by oxcart, then train, and then to the sister ship of the Titanic , the Olympic . They left the beautiful Casentino valley in Tuscany behind and came to the dirty, gritty town of Monessen, PA, where the steel mills provided work and there was real education for their sons. My uncle and father both went to Carnegie Mellon and graduated first and second in their respective classes and lived the American Dream. So my twin grandsons now have the place, names, and dates correct for future reference.

“I volunteer as a narrator of books with some Western Pennsylvania connection for the Library of Accessible Media, a division of the Carnegie Library. My husband, John ’68 , and I like to travel and we have done a lot in 2023. I only have one child in Pittsburgh, so I also travel to see these twins in North Carolina and my much younger granddaughter in New Mexico. I am very grateful for the charmed life I have led, and I think it all goes back to that decision my grandparents made to leave Italy in 1913.”

I celebrated happily with Bridget Murphy ’70 our 75th birthdays in New York City last summer. Ellen Celli Eichleay ’70

Ellen adds, “I celebrated happily with Bridget Murphy our 75th birthdays in New York City last summer. Bill , ME ’71, and Gail Post Wallis we see with some regularity, and it is always a great time when it happens. We met them for a weekend in Montreal in late September. We were wandering through the museum there and at the end of a corridor was a very modern painting. I asked them if it looked like a hockey mask and when we got up close, its title was ‘Dryden’!”

Continuing the creative energy that seems to envelop our classmates, Larry Kraft (North Springfield, VT) has had his first stage play, a tragicomedy titled Waiting for a Eulogy , both published and performed. This full-length play, which includes references to campus life at Alpha Sigma Phi, is inspired by Waiting for Godot by Samuel Beckett. Larry’s play was scheduled to have its “world premiere” by the Springfield (VT) Community Players in April. It has also been accepted for publication by OPEN: Journal of Arts and Letters , which “offers a range of contemporary aesthetic experiences made available through its several media platforms.”

More creative energy is evidenced by Ellen Saltonstall (New York, NY) in the publishing of her fifth book, Empowered Aging: Everyday Yoga Practices for Bone Health, Strength, and Balance. From the press release: “Embrace the journey of remaining active while aging. This comprehensive guide by seasoned yoga therapist Ellen Saltonstall offers a fresh perspective on living with courage, vitality, and grace. Drawing from the wisdom of yoga, this book provides professional guidance, gentle adaptations, and compassionate support to improve your bone health, strength, and balance while enhancing your overall well-being so you can enjoy the fullness of life at any age.”

Yet another creative classmate many of us know is artist Andrea Strongwater (New York, NY). You may remember her as the creator of the Cornell puzzle that was a Reunion memento. Her creativity is now a part of an exhibit at Cornell’s Mann Library called “From Nabokov’s Net.” A noted writer and professor of Russian literature at Cornell from 1948–59, Vladimir Nabokov was also impassioned by butterflies. While in Ithaca, he collected hundreds of specimens from across the U.S., which he donated to the Cornell University Insect Collection. The exhibit, part of which is a selection from his collection, also includes artwork by Andrea, including a butterfly describing in Latin the classification of the butterfly named after Nabokov. This butterfly is also being made into a sticker to be given away and used as a part of the publicity. The exhibit runs through August, so attendees to this year’s Reunion will have the opportunity to see it.

As always, you may contact me directly (see below) or you may use the University’s online news form . ❖ John Cecilia, MBA ’79 ( email John ) | Alumni Directory .

For those of you not on Facebook, you missed splendid images taken by Gilda Klein Linden and her husband, Jeff Krawitz, from their long winter trip to Southeast Asia. I’m glad I don’t have to select a favorite among those from Hong Kong (Victoria Peak, variously shaped double-decker buses, and more neon lights than discos in the ’60s), Cát Bà Island (seafood and cruising), Ha Long Bay, Hue, Mekong River sites, and a Vespa tour of Ho Chi Minh City (Saigon, per localspeak), and still more pix from Bangkok, Phnom Penh, and Singapore. Actually, I would choose a favorite from Angkor Wat, the newly restored Hindu Buddhist temple near Siem Reap—if my top picks weren’t all of Gilda herself, a smile beaming in every shot she’s in.

During the pandemic, they traversed the U.S. and along the East Coast in their tow-behind camper trailer. They have now been to all 50 states. As soon as possible after COVID, the two were in the air to Zimbabwe, Zambia, Botswana, and Namibia. That’s not all. In toto, they’ve cruised the Caribbean, a thousand miles up the Amazon, and from Seville to Lisbon. Some jaunts include family (Tanzania/Zanzibar and London/Cotswolds). More is scheduled this year. She’s been to all seven continents and swum in all seven seas. Considering all the time away, it’s notable that Gilda’s been an EMT with the local ambulance corps near home in Fair Lawn, NJ, for 32 years and also volunteered to give COVID vaccinations in the first 18 months that these were available to the Bergen County Medical Reserve Corps. She can easily see two of her boys: her middle son lives six miles away with his wife and family while the older one and partner have moved to eastern Pennsylvania. Seeing her youngest son and his husband requires flying to London … and we can imagine what a joy that is for this traveling classmate!

Robert Bloch tells us that over last November’s 20–22 weekend, 23 Psi U fraternity brothers, with some of their wives and girlfriends and “wannabe Psi Us from SAE” enjoyed an informal reunion. The death, earlier in 2023, of Barry Cermak prompted them to get together. Attendees from the Class of ’70 were Steve Hirst and Art Walsh . From our class, attendees were Tom and Amy Brereton , Warren and Donna Baker , Leo , ME ’72, and Laurie Bettan Reinsmith ’72 , Eddie Kosteva , MBA ’73, Gary Cokins , and Robert and Nancy Bloch. From the Class of ’72 were Ed and Tracy Marinaro , Mike Jones , Chris Hart , PhD ’83, Chuck Parr , Mike Kozel , David Commito , John Gollon (and his girlfriend, Jen), and Fred Hoefer . Brothers from ’73 were Ed Mace , Kellen Smith , Stu Millheiser , Pete Durkalski , Dick Bell , and Mike Dempster . Joining from SAE were John Morehouse ’72 and Steve Kramer ’72 . Happy stragglers streamed through the State Diner Sunday morning.

Gilda Klein Linden ’71 has been to all seven continents and swum in all seven seas.

A highlight of cocktails and dinner along Cayuga Inlet at the Boatyard Grill included a sampling of fine wine from brother Mike “Vittler” Jones ’72’s Lagunita Vineyard (Amador County, CA). They tailgated the next afternoon and had barbecue at the Antlers after a tour of the old Psi Upsilon house (now repurposed as a grad student residence and activity center). Brothers took side trips to Taughannock and other parks and wandered the campus. They saw much that had changed, yet a demonstration in front of the Straight suggested much had not!

Howard Rodman is still screenwriting (an adaptation of a novel for Amazon Studios), television writing (staffed on “The Idol” from HBO-MAX), novel writing (latest, The Great Eastern, “a sprawling, lavish, literary, 19-century, anti-colonial adventure novel from Melville House”), teaching (professor at USC), and cultural “bureaucrating” (VP of the Academy of Motion Picture Arts and Sciences). He had been named a Chevalier de l’Ordre des Arts et des Lettres by the Republic of France and this year was promoted from Chevalier (Knight) to Officier.

Some have asked me to report on a Cornell’s Adult University’s January expedition to Antarctica. Ordinarily your correspondent has easy access to words … and words and words. But, in the case of the planet’s southernmost, least-populated, fifth-largest, and most arid continent, I still struggle to articulate the awe of what our merry band experienced aboard the SH Vega . The quiet. A wider range of blues and grays than you can imagine. Vast emptiness. More kinds of ice than you’ve heard of. Nearly no falling snow. Proximity to creatures of land, sea, and air—who were unconcerned as we walked nearby on ice or snow and cruised close on small Zodiacs or our 150-passenger ship. Superb Cornell teaching, exquisitely appointed ship, fine food and drink, and as companionable a group of Cornell alumni and friends as one might like. Because of the International Association of Antarctica Tour Operators, ships operate within the Antarctic treaty system and aim to have minimal impact on the fragile environment. Thus, once we’d left Ushuaia, Argentina, we saw only one other boat as we plied the Beagle Channel and Drake Passage and meandered meaningfully among the icebergs, sea ice, and islands of the Antarctica Peninsula that’s closest to South America. Put this wondrous place on your list and until you get there, explore online. Ask me for the short film of our excursion if you wish. ❖ Elisabeth Kaplan Boas ( email Elisabeth ) | Cara Nash Iason ( email Cara ) | Alumni Directory .

I just returned from the Cornell Alumni Leadership Council (CALC) meeting in Baltimore—something new for me, but, as it turns out, an event that hundreds of alumni from all graduations have been attending repeatedly for years. It was great meeting up with classmates and meeting new friends. Cornellians came from all over the country and even abroad. Among the events I attended was an impressive lecture on leadership during challenging times by four-star general, former Chief of Staff of the U.S. Army, and distinguished senior lecturer of leadership at the Johnson School, George W. Casey Jr., and an informative discussion of antisemitism and racism on the Cornell campus. A dinner in a nearby restaurant organized by our enthusiastic and energetic class president, Nancy Roistacher , was delicious, but more importantly lots of fun. For those of you in the Class of ’72 who may be interested in attending a future meeting, there is no need to be a class officer or in a leadership position to attend CALC—all Class of ’72 alumni are welcome.

News from our classmates continues to come in. Richard Joslyn , PhD ’77, writes in from Jenkintown, PA, that he retired in 2020 after a 44-year career at Temple University as a professor of political science, associate dean, vice provost, and dean of Temple’s campus in Japan. He recently published a book with Temple Press, called The History of Temple University Japan . Currently he and his wife, Kathleen, get the most satisfaction from taking care of their granddaughter, Anabel, age 13. His summers are spent at a cottage on Keuka Lake, one hour west of Ithaca, where he and Kathleen kayak, drink wine, and have a boat that goes 8 mph! Among his memories of Cornell are singing with the Glee Club and going to hockey games at Lynah Rink, becoming politically active, and standing outside Willard Straight when the students who had occupied it in protest of racism on campus came out bearing guns, thus witnessing, in real life and real time, the famous Newsweek magazine cover photo.

Richard Joslyn ’72 , PhD ’77, spends summers at a cottage on Keuka Lake, one hour west of Ithaca, where he and Kathleen kayak, drink wine, and have a boat that goes 8 mph!

Nancy Kollisch (Rancho Santa Fe, CA) is grateful that everyone in her family is doing well, and that she continues to walk and travel in her retirement. She fondly remembers having a great time at Cornell, despite, she claims, being a “nerd!”—which actually may have been a good thing, she says, for it kept her out of trouble. Clearly, she worked hard and accomplished great things.

Mark Schimelman writes that he retired 12 years ago and is enjoying the freedom and time with his family. He sadly recalls the passing 12 years ago of Joel Shapiro ’73 , his best friend in college (besides his wife, Shelley (Grumet) ’73 ).

Elias Savada , another attendee of CALC, writes in from Bethesda, MD, that after graduation he moved to the Washington, DC, area and settled into a career in film history and archiving, starting with the American Film Institute (then based at the Kennedy Center) and ultimately founding and (still) running the Motion Picture Information Service, which provides about 400 customized copyright research reports annually. He and his wife, Andrea, are still waiting for grandkids as his son, Daniel, and daughter, Shira, have other ideas. Back in 1995 Elias co-wrote Dark Carnival , a biography of film director Tod Browning ( Dracula , Freaks ) that was recently revised into a larger, limited-edition volume (with a paperback due later this year). He writes film reviews and also writes about craft beer.

Keep the news coming. We’re all interested! ❖ Susan Farber Straus ( email Susan ) | Frank Dawson ( email Frank ) | Alex Barna ( email Alex ) | Wes Schulz , ME ’73 ( email Wes ) | Alumni Directory .

By the time you read this, the election will have ended, but I’m hoping our long-serving class president, Paul Cashman , has been elected to the Board of Trustees. He is dedicated to Cornell and would serve everyone well. Go Paul!

Rich Saltz , MBA ’74, our current class co-president, and his spouse, Lynn (Rosenbluth) ’75 , attended the wedding of their daughter Marcy ’06 on Rich’s birthday in a restaurant in Greenwich Village. Marcy married Andrew Ogulnik. Adding to Rich and Lynn’s joy, their son Ted ’12 became engaged to Alyson Stein ’13 .

Vicki Simons writes that COVID helped her feel more attached to Cornell, following the wonderful online offerings. She especially enjoyed Corey Earle ’07 ’s class on “all things Cornell.” Attending the 50th Reunion was the icing on the cake. As an architect, she marveled at the new and exciting buildings on campus, “a literal Who’s Who in architecture.” Vicki has also been traveling since retirement. Her favorite trip was to South Africa, Botswana, and Zimbabwe for a safari. She’s also enjoyed a Cornell trip with alumni to Northern Italy.

Steven Fruchtman , too, has recently returned from a trip to Tanzania, Kenya, and Rwanda. “Wonderful people and fabulous sights.” His three children still bring the most satisfaction these days, as he still works running a biotech company focused on drug discovery. His best memory of Cornell remains meeting his buddy Chuck Keibler .

Mary Gilliland , MAT ’80, has just published a new book of poetry, Ember Days . She is a senior lecturer emeritus at the Knight Institute for Writing. An award-winning poet, she has previously published The Devil’s Fools and The Ruined Walled Castle Garden . She has also received a Council of the Arts Faculty Grant from Cornell, where she created and taught seminars, such as “Ecosystems & Ego Systems” and “America Dreaming.”

It was great to hear Jody Gandolfi ’73 and Bill Cowdery ’73 play piano again after 50 years!

Bill Chamberlain echoed the fun had at the 50th Reunion. He was delighted to connect with friends from his time at Cornell. He heard the cool story of how Greg Kishel and his wife, Karin, met in the Peace Corps. He also caught up with Nancy Roistacher ’72 and Wayne Merkelson , JD ’75, Dave and Patty Miller Ross ’72 , Ed Cobb , Pam Meyers , Bill Welker , MBA ’75, Bill Cowdery , PhD ’89, and Bill Cagney . A special thanks to Nancy and Wayne for putting together a wonderful Risley reunion. It was great to hear Jody Gandolfi and Bill Cowdery play piano again after 50 years! Bill is currently acting in Tracy Letts’s The Minutes . Otherwise, he’s mostly retired and working remotely very part time as a pre-law advisor at Reed College in Oregon.

Laura Davis had the pleasure of screening her latest documentary, Virulent: The Vaccine War , at a recent Cornell Intercampus Vaccine Symposium. It was co-presented by Weill Cornell and the Veterinary College’s Department of Immunology. Virulent examines the consequences of vaccine hesitancy and denial. After it was first screened, the COVID pandemic hit and it “became a very different film, one about the national conversation about vaccine safety and mandates.” We hope to be able to see it soon.

Denise Meridith has been reappointed to the College of Agriculture and Life Sciences Advisory Council. She’s also continuing her participation with the Cornell Technology Business Network and her long tenure with CAAAN in Arizona. Since retiring from the Bureau of Land Management, she has started two consulting companies.

Ann Prezyna and her spouse, Gordon Lewis, have been adapting their ranch in southeast Arizona as the climate becomes hotter and drier. They purchased a heat pump to replace their propane heat and AC unit and now have an electric bill below $25 a month. They power their EVs with solar panels. Their other home is a houseboat in Seattle. Ann is actively engaged in preserving our natural world. Her law firm, Animal and Earth Advocates, continues to pursue lawsuits to protect the land she loves. She misses the Vietnam War protests, when the community was actively engaged. Ann sees such activism as much needed now.

So be sure to keep us up to date on your life. ❖ Phyllis Haight Grummon ( email Phyllis ) | Dave Ross ( email Dave ) | Pam Meyers ( email Pam ) | Alumni Directory .

In case you’ve missed the emails, our 50th Reunion is this June. (What!) If you haven’t signed up yet and want to go, please do so now. I still remember when my mother, Ethel Potteiger Myers ’35 (who, BTW, knew Martha Van Rensselaer and was there when that hall opened), attended her own 50th in 1985. She was still talking about that when I accompanied her to her 75th in 2010, just a couple of months before our eldest daughter, Annalise ’14 , began her freshman year. So it’s a big deal, and if you haven’t attended Reunion in a while, or ever, please consider joining us. Hey, you don’t want to miss Larry Kleinman and me reliving our DJ days at WVBR when we go back on the air live from our class headquarters at RBG Hall Friday night! Make sure “your” song is included in the 50th Reunion playlist—send your favorite to John Foote ( email John here ).

If you are going, don’t forget to check out what your “Affinity Groups” (sports teams, Greek houses, residential halls, choral/instrumental groups, clubs, etc.) will be doing there. Go to this website and scroll down to “50th Reunion Affinity Outreach” for the complete list. (There are email links in the heading to Mary “Mi” O’Connell and Diane “Kope” Kopelman VerSchure .)

And, whether or not you can attend, don’t forget that this is a wonderful time to consider giving back. Our 50th Reunion campaign co-chairs, Jim Irish and Andrea Glanz , and participation chair David Miller are leading the effort to once again make our class truly notable.

Speaking of getting back together, a number of us “represented” at the Cornell Alumni Leadership Conference (CALC) at the Baltimore Marriott Waterfront the last weekend in February, including Beth Allen , former class president Dale Lazar , JD ’77, Ellen Perlmutter , Bill Quain , and me. Dale said afterward, “I enjoyed visiting with our classmates and all of my Cornell friends. It was a great turnout.” Steve Piekarec came up from Northern Virginia Friday night to host the Cornell classes of the ’70s reception at the Pratt Street Ale House (as he did previously), so ’74s were prominent there as well. Although I had attended parts of CALC in the past, when it was in D.C. or Baltimore, this was the first time that I had signed up for the full event (including staying at the Marriott Friday night). As an officer of the Cornell Club of Washington (DC) as well as our class itself, I found it very valuable. The schedule was pretty tight (15 minutes between sessions—like classes!) beginning Friday afternoon at 2 p.m. and all day Saturday, ending with a gathering with Alumni Affairs regional representatives at the hotel bar after CALC officially ended at 5:30 p.m. I recommend it and would go again.

You don’t want to miss Larry Kleinman ’74 and me reliving our DJ days at WVBR when we go back on the air live Friday night [of Reunion]! Jim Schoonmaker ’74

From the mailbox: David Hirschland writes, “I laughed when I saw that Nancy Dworkin Miller ’73 ’s favorite Cornell memory was hearing James Taylor. One of my favorites was Nancy, a percussionist, leading the way to the Big Red Pep Band in ‘Sweet Georgia Brown.’”

Esteban Rosas writes from Mexico, “I remember and miss the infamous ‘Baja Chemical Company’— Blaine Rhodes (‘Cisco’), Robert Hoff (‘the Fat One’), and me (‘Speedy’). We wrote a project for a course in chemical engineering 50 years ago, along with slides and cassettes (no iPhone then). We got a D, but we had so much fun—even the profs wanted a copy to show the new students. Hope we can meet again this coming summer.” Esteban adds, “Cornell has been part of my life, and when I have visited (last in 2017) it feels like taking a refreshing boost for the times to follow. I still work, and I think I will do it till the end. I had some years in recess but got bored and started again. I have a little consulting regional office, and I also participate as an advisor to the company in Washington, DC, of my former roommate from North Campus, Don Gross .”

As for his family, Esteban has one son, two daughters, and three fantastic grandsons; “my pride and joy—they play with me in a jazz band, the Stray Cats. My wife, Rosa, and I will complete 49 years of happy marriage just before our class’s 50th Reunion. Rosa and I are excited to attend Reunion. I will play my sax and acoustic guitar as part of a band on Saturday, June 8, in Klarman Hall. We will play ’70s music for your entertainment. All the class is invited.”

Perry Jacobs has forwarded several links he thought we might like to know about. “To receive the ‘Big Red Thread,’ the recently created newsletter from the Athletics Department covering all of Cornell’s teams, email scl-add@cornell.edu . The intro by Nicki Moore, the new Director of Athletics (and Cornell’s first female AD), is always a fun read.” (Editor’s note: She did a terrific job hosting a panel of Cornell alumni athletes at CALC.) Perry also recommends “Cornell Hockey 401: The History, Art, and Science of Ice Hockey at Cornell” (which you can livestream here ) and the recent Cornellians story about Mike Schafer ’86 , the longest tenured coach in Cornell men’s hockey history.

We thank all for their contributions and invite you to continue to send in your news. ❖ Jim Schoonmaker ( email Jim ) | Molly Miller Ettenger ( email Molly ) | Alumni Directory .

It is mid-February as I write, and I can’t wait until the clocks change so it will be light in the morning and early evening! I am also looking forward to June to go up to Ithaca for Reunion to scout out places and activities that we can use/copy for our 50th Reunion, June 5–8, 2025! Put the dates on your calendar, and get ready to see old friends and definitely new buildings on campus. If you want to get involved with the planning, have an idea for an event, or would like to volunteer for the next five years, please contact me ( Deb Gellman , email me here ) or our Reunion chair, Susan Fulton ( email Susan ).

Last fall, I went to a conference honoring former Cornell history professor Walter LaFeber at Cornell Tech on Roosevelt Island. A group of former students discussed many of his works and gave personal anecdotes about his impact on their lives, personally and professionally. One of the presenters was Andrew Rotter . Andy retired from the Colgate University Department of History, where, he says, for nearly 35 years he taught courses in U.S. foreign relations, in the spirit (but without the skill) of his Cornell mentor. He and his wife, Padma Kaimal (Swarthmore ’79), live in Hamilton, NY, where he spends his time writing, jogging, cross-country skiing, sitting on the village planning committee, and teaching in a medium-security prison. He has two adult daughters, a son-in-law and one daughter’s significant other, and two grandsons, ages 6 and 2, all living two hours away in Albany.

In the fall, I also traveled to Washington, DC, for a girls’ weekend with Steffi Feit Gould , Karen Lauterbach , and Ting Magill Kamon . Steffi and husband Perry ’74 had a busy 2023. Son Keith and his wife, Sophie, added daughter Violet to join big brother Miles in April; son Jason married Maddie in May; and they all (including son Andrew ’05 and wife SiChang) went to Portugal in September to help celebrate Steffi’s 70th! Karen and Mark Powers spent his 70th tucked away on a Nat Geo ship off the coast of Iceland. They saw a live volcano spewing lava, breaching whales, and puffins. Mark just published a short story, “Rabbits,” in the literary journal Does It Have Pockets . Ting and Mark Kamon spend lots of time visiting their sons Jake (and spouse Megan) and Mike (and spouse Lindsay), daughter Emily (and spouse Jason), all of their grandchildren, and Kappa and DU friends. Ting is an active member of the Chester River Chorale, which has numerous concerts during the year.

Mark Powers ’75 spent his 70th tucked away on a Nat Geo ship off the coast of Iceland.

I spent Christmas and New Year’s with Lynn Arrison Harrison , which coincided with her birthday. Her son Willie, daughter Katie, and grandson Dean came from Burlington, VT, and Naples, FL, respectively to help us celebrate her 71st! Her son Ridgley was at Disney World with his family but was with Lynn for her 70th. Lynn spends time gardening, kayaking, hiking, and doing various other outdoor activities in Saranac Lake, NY. Pam Hanna writes from Ithaca, NY: “I turned 70 last July. Surprisingly, it was a bit of an existential moment for me. Knowing that (for real!) most of my life is now in the past gave me great pause, more than I ever expected! Certainly more than turning all the other ‘milestones’—i.e., 21, 30, 40, 50, 60. BUT, I got celebrated in style, with a large family gathering including two of our three sons, their partners, and two of our grandkids. We enjoyed Stewart Park, Myers Park in Lansing, a lake cruise, dinner at the Boatyard, and so much more, with a whole crew. I loved every minute! Ithaca cooperated with fine summer weather. Here’s to more birthdays!” Elyse Byron had a party at her favorite bar in Illinois with a great dance band and about 50 friends and family for her 70th. In addition, she spoiled herself with a trip to Antarctica!

Bob Brennan , ME ’76, and wife Claire took the whole family on a vacation to Costa Rica. They took their four kids, the kids’ spouses, and their three grandchildren. They rented a villa for everyone in Tamarindo, on the west coast. They then all went to a resort in Monteverde in the Central Valley area. Sun and sand, then mountains and nature.

Rich Marin , MBA ’76, lives in San Diego, CA, with wife Kim. Even though the kids are in the East, and Kim and he get back east regularly and see lots of Cornell pals, they consider themselves Californians now. Rich spends his time doing lots of investment expert witness work, especially since ending his teaching career (Cornell for 10 years and University of San Diego for three years). “I’ve written several books and write a 1,500-word story for my blog every day.” He does heavy-duty hillside gardening, something he learned working at the Cornell Plantations, when it was called that. His other pastime is riding the hills and deserts on one of his BMW motorcycles. Kim is still singing cabaret both in California and in New York. Last year they traveled to Egypt and Jordan.

I know that many of you celebrated your 70th in grand style and we all would love to live vicariously through those adventures (I know I love to hear the stories). Please share them with your classmates and plan on joining us in Ithaca next year! If your email contact information is “dated,” please send me a note and I will have you updated in the University records, or send updates here . Most of our Reunion updates will be via email so we would love for your contact info to be up to date! ❖ Deb Gellman , MBA ’82 ( email Deb ) | Karen DeMarco Boroff ( email Karen ) | Mitch Frank ( email Mitch ) | Joan Pease ( email Joan ) | Alumni Directory .

Rich Gallagher was one of my first friends on campus, thanks to a pre-freshman-year Wilderness Reflections bike trip on Cape Cod, so it was a treat to hear from him recently. Rich wrote, “It’s been a good while since I sent any class news, so here’s what’s new with me. I discovered that retirement was overrated and am now back in practice part time as a psychotherapist, serving all of New York State via telehealth. Since going back into practice I’ve published a new self-help book ( The Anxiety Journal , Rockridge Press) and presented a new treatment protocol for obsessive-compulsive disorder at a major clinical conference.”

Rich has written many great books of practical psychology, on topics from customer service to improving your small talk to dealing with fears and phobias. You can learn more about him on his website !

Bruce Behounek and his spouse, Diane, live in Yardley, PA. Bruce continues to keep up with medicine, but his greatest satisfaction comes from family time, including with two grandchildren, Mason and Harper. His best memories of Cornell include football, hockey, and lacrosse games. In more news from Pennsylvania, Nancy Arnosti writes that she enjoys “spending time outdoors with people whom I love. I am preparing to retire from my executive compensation consulting practice serving life sciences companies in mid-2024. My children are thriving—both in the Bay Area. I only have to take one trip to visit both. My partner and I are enjoying our 12th year together while living 135 miles apart.” Nancy’s favorite Cornell memories are “ Uri Bronfenbrenner ’38 , Walter LaFeber, David Levitsky, and other inspiring professors—and having friends from all over the U.S.” Happy retirement to you, Nancy!

Martha Frucht Rives and husband Darden are enjoying small-town living in Exeter, NH. Martha writes, “I am making art in my studio, serving on the New Hampshire Art Educators’ Association board, and serving on the Scholastic Art Awards of New Hampshire board. I recently had a show of my artwork at the Levy Gallery in Portsmouth, NH. I am working on promoting my art and having more exhibitions.” (Editor’s note: You can view some of Martha’s stunning artwork here .) Other things that bring Martha satisfaction include her son, Greg, who “is happily living and working in New York City, and bowling, ice skating (yes, I still ice skate at almost 70—great exercise!), playing bridge, and traveling.” Her fond memories of Cornell include “working on the yearbook, taking photos of campus life, being outside on a beautiful day, and having breakfast with friends at the Green Dragon (glazed chocolate donuts—yummy!).” Can confirm—those donuts were great.

Jim Sollecito ’76 procured and donated 280 unique varieties of hydrangea to Cornell, totaling more than 810 plants on the campus.

Amy Lubow reports, “I’m a landlady in Brooklyn, NY. One of my sons also attended Cornell and is now an endocrinologist married to an emergency room doctor.” From Northport, MI, Philip Loud writes that he’s enjoying “projects and building things, from furniture to fences to outbuildings to Adirondack chairs. In retirement, I’m volunteering with our local schooner school-ship organization.” (Must break in again: see schoolship.org for more on this amazing Great Lakes program.) Philip adds, “I had a new titanium knee installed last February and probably will do the second next winter.” His favorite Cornell memories are “my time as a member of Phi Gamma Delta, walking around our beautiful campus … oh, and some classes. Ha.”

Barbara Saunders-Adams is taking satisfaction from writing, reading, tennis, hiking, and friends. She reports that she’s “writing a monthly magazine for the Pelham (NY) Jewish Center and editing, plus leading a monthly Jewish book discussion for the PJC. My son Aaron recently signed a recording contract and is going on tour around the country. My daughter Shira opened a gardening business in the Hudson Valley called Honeybee Horticulture. My husband, Sam, hikes daily on the New Paltz trails with our puppy, Finley.” Barbara’s best memory of Cornell is “hanging out with friends in the Straight, discussing everything.”

Congratulations to John Banner , who writes, “In March 2023, I ran the Tokyo Marathon, thus completing the ‘World Marathon Majors,’ starting with Boston, New York, Chicago, Berlin, London, and, lastly, Tokyo.” John is “project-developing a state-of-the-art energy plaza in Palm Springs, CA, offering green hydrogen for FCEVs (fuel cell electric vehicles) and H2ICEs (hydrogen internal combustion engines), DC fast charging for BEVs (battery electric vehicles), CNG (compressed natural gas), and conventional fuels, for commissioning in late 2025.” And, John adds, “Two movies written by my screenwriter daughter, Rebecca Banner, released in 2023: True Spirit (Netflix) and Space Oddity (Hulu).” Congrats to her, too!

And thank you to Jim Sollecito , who was an ornamental horticulture major at Cornell. He procured and donated 280 unique varieties of hydrangea to Cornell, totaling more than 810 plants on the campus. This is the largest singular planting of a species in the history of Cornell. Professor emerita Nina Bassuk ’74 and members of the Cornell wrestling team also helped to plant the campus hydrangea collection over the last eight years. (If you’d like to view the hydrangeas on campus, you can find maps and walks here .)

Learning a lot of science and living vicariously through your news this time, friends! Please let us know what you have been up to. ❖ Pat Relf Hanavan ( email Pat ) | Lisa Diamant ( email Lisa ) | Alumni Directory .

A few more of our classmates have joined the ranks of retirees and, as expected, continue to engage in a wide range of fun, purpose-filled, and exciting activities. Here’s what’s happening in their lives.

Bill Grant lives in Ponte Vedra, FL, with Cindy, his wife of 37 years. After a successful and varied professional career, Bill retired and in 2022 founded a company called Homes for Hometown Heroes , a real estate firm that “gives back to those who serve.” Bill and Cindy also created Grant Realty, a real estate investment and management company, to manage the goal of passing on their legacy to their four children and 11 grandchildren.

In addition to his real estate work, Bill is very active in Cornell and community volunteer activities. He enjoys meeting prospective Hotelies through his work with CAAAN and he serves on the board of the Cornell Club of Northern Florida. He also spends a lot of time coaching his granddaughters’ YMCA basketball team and enjoys mentoring teenagers to achieve their goals.

With all of that, Bill and Cindy somehow found time last year to take an “epic” 51-day cruise to the South Pacific and French Polynesia. Next up for them is a tour to Thailand, Laos, Cambodia, and Vietnam.

Bill’s favorite memories of Cornell include his graduation day, running into Statler Hall with his fellow graduates and trading his graduation cap for a chef’s hat. Thirty-three years later he proudly watched his son Daniel ’10 graduate from Cornell and receive his commission as the lone Marine Corps Second Lieutenant. Bill is most grateful for his Cornell education and all the amazing Hotelies and Cornellians he’s met along his journey.

Amy Birnbaum writes, “I retired from a long career at CBS News in February 2022. I am reconnecting with old friends and volunteering for political and academic projects. Life is sweet! My husband, Bernard Furnival, and I are traveling more. My daughter is on the West Coast and my son and his fiancée are on Manhattan’s West Side.”

After retiring from a career in biotechnology as a molecular biologist turned medical writer, Linda Gritz started writing Yiddish songs. (You can listen to her songs on YouTube !) This was doubly surprising since she is not fluent in Yiddish and has just a basic knowledge of music. So Linda was extra surprised when she won the People’s Choice Award for Best New Jewish Song at the international Bubbe Awards! This annual award is based on the Grammy awards, and “Grammy” was playfully translated into Yiddish as “Bubbe” (grandma). Linda also came in third in the juried award for Best New Jewish Song. Congratulations, Linda!

Linda Gritz ’77 won the People’s Choice Award for Best New Jewish Song at the international Bubbe Awards!

John Molinda has a lot going on in retirement. He primarily does volunteer work for the energy policy committees for the Institute of Electrical and Electronics Engineers and American Nuclear Society. Otherwise, John stays involved in activities for Cornell and Carnegie Mellon. He is also active in sports including tennis, golf, skiing, mountain and road biking, and windsurfing and still likes to check out local rock bands.

Catching up with old friends and classmates brings John the most satisfaction these days, and he’s enjoyed a lot of it lately. He writes, “This year has been a 50th high school reunion year for most of us in the Cornell Class of ’77. Four of us from Mount Lebanon High School (Pittsburgh area) Class of ’73 went on to Cornell and three of us made it back for the 50th reunion—including Patty Cox Yeates , MBA ’78, who I had not seen since Cornell days, and Mark Halper , who traveled from his home in England, where he is a freelance journalist and a part-time leader of a band called Ghostweed.”

John also attended the 50th reunion for South Hills Catholic High School Class of ’73, where he spent two years, and caught up with Cornell ’77 classmate Don Lee , BS ’83. John adds, “I consider this 50th high school reunion year a kickoff for the countdown to our own 50th Reunion at Cornell.” I agree, John, and encourage all our classmates to start planning to come back to Ithaca, June 10–13, 2027, for our 50th Reunion!

Jone Sampson writes that she and her husband, Sam Weirich, finally retired in 2021 and built a small home in Bedford, WY. They are enjoying hiking and fishing in the summer and skiing and snowshoeing in the winter. Jone and Sam also love visiting their three daughters, who are scattered across the country in San Francisco, CA, Boulder, CO, and Portland, OR.

In February, Cara Lebowitz Kagan , Karen Wellin , and I attended this year’s Cornell Alumni Leadership Conference, held in Baltimore, MD. It’s always great to connect with some of my fellow class officers, meet fellow alums, learn about what’s happening on campus, and explore a variety of leadership topics. Add to all that a large dose of Big Red spirit and it was a fun, educational, and inspirational weekend.

We enjoy hearing from you and having the opportunity to share your stories with our fellow classmates. Please keep all of your news and views coming in! ❖ Mary Flynn ( email Mary ) | Howie Eisen ( email Howie ) | Alumni Directory .

Greetings, classmates! Thanks to my partner-in-posting, Ilene Shub Lefland , for handling the last two columns. The ’78 inbox wasn’t very full for this column. I tried turning over the laptop and shaking vigorously—no luck. I don’t recommend trying this strategy to find specific emails.

Mike Bernard (Albuquerque, NM) writes: “I took a U.S. Tennis Association seniors class over the summer and started playing tennis for the first time since college. I now walk two rounds of golf a week and play tennis for two hours twice a week and am still gaining weight!” Bruce Clements is also a tennis and golf buff. He’s lived in Saratoga Springs all but nine years of his life. He is inching closer to selling his independent insurance agency. His daughter and son both attended graduate school after Cornell. He has served in the Lions Club for over 40 years, and he continues to compete in golf and tennis.

On the legal front, Mark Green is the Chief Justice of the Massachusetts Appeals Court, the statewide intermediate appellate court in Massachusetts. Mark writes: “On December 5, 2023 (and again on December 12), I was joined on panel by two of my colleagues who are also Cornell alumni: Justice Eric Neyman ’90 and Justice John Englander ’80 . Though the three of us have served together on the Court since Justice Englander’s appointment in December 2017, this was the first occasion on which the three of us sat together on panel, for an ‘all Big Red’ sitting.”

I took a U.S. Tennis Association seniors class over the summer and started playing tennis for the first time since college. Mike Bernard ’78

On the travel front, Scott ’77 and Elaine Zajac Jackson started off 2024 with a Cornell Alumni Travel trip to Antarctica. They started in Buenos Aires and then embarked on the Antarctica cruise with two Cornell professors. They hoped for smooth sailing and lots of penguins and adventures. This is their second Cornell Alumni Travel trip. Their first was “Untamed Alaska” about five years ago. In August 2023, Julian Vrieslander , PhD ’81, and I went to the Netherlands for a reunion with some of his cousins, then went to Italy—and promptly caught COVID. This put a damper on the last leg of the trip in Venice. Fortunately, both of us recovered without any long-term issues.

On March 12, the classes of ’77 and ’78 cosponsored a webinar titled “Seasons of Perfection: Big Red Championship Lacrosse and Richie Moran.” The panel was moderated by our own David Bilmes , who was sports editor of the Cornell Daily Sun . Panelists were Dan Mackesey ’77 and fellow ’78ers Chris Kane and Tom Marino . The fourth panelist was Christian Swezey, author of We Showed Baltimore: The Lacrosse Revolution of the 1970s and Richie Moran’s Big Red (Cornell University Press). Many thanks to Kent Sheng , BA ’82, for helping pull this together.

Not only is Joe Holland , MA ’79, a best-selling author (his latest book is Make Your Own History ) and attorney, but he co-founded Beth-Hark Christian Counseling Center . It is still going strong after nearly 40 years and provides free mental health services, a soup kitchen, and a food pantry. February 23 marked the premiere of Harlem Grace , a short docudrama of his early years serving the neighborhood.

All for now. Stay well and see you in June! ❖ Cindy Fuller , PhD ’92 ( email Cindy ) | Ilene Shub Lefland ( email Ilene ) | Alumni Directory .

Brad Spencer writes, “I am living in D.C. Although I retired from law firm practice a few years back, I have recently become chairman of the board of Melwood Inc.—one of the nation’s largest AbilityOne Contractors with the federal government. Melwood secures employment of disabled individuals through federal contracts, as well as through employment in the private sector. In addition, I have been pleased to work with many dedicated individuals who seek to make affordable housing/independent living for disabled individuals a reality in the nation’s capital and beyond. In all, it is the culmination of this ILRie’s dream of working to create a more fully integrated and inclusive workforce.”

Brad adds, “As my primary hobby, I have been singing with other Washington Cornellians and former CU Glee Club director Scott Tucker in the Washington Men’s Camerata. My new grandson, Easton Yip, was born in Honolulu.” Of his time on the Hill, Brad fondly recalls singing with Jon Wardner , Steve Whitney , Steve Bronfenbrenner , MBA ’81, and Barry Jacobson ’70 , BA ’74, in the Glee Club!

Sharon Flank shares, “Though it’s not where I thought linguistics would take me, I am happily leading research efforts for two projects in personalized medicine using 3D printing—and just notched my 11th patent, this one joint with my younger daughter, Becky Maksimovic ’19 , ME ’20.”

Bill Gallagher writes, “I’m in my fifth year teaching, now at CEVRO Institute in Prague. The weather is very much like Ithaca. I have students from five different countries, so the school has a real international flavor. My American metaphors don’t have quite the same impact as they did back in the U.S., so we’re ‘growing into appreciating each other’ as the semester progresses. Very much a ‘beef and beer’ kind of town—like a big medieval village with a Chapter House every few blocks. I got to visit my first Prague Christmas markets. After the school year, I’m looking forward to seeing everyone at Reunion!”

D. Dina “Debbie” Friedman , BA ’78’s new short-story collection, Immigrants , was published by Creators Press in November 2023. She also has a new poetry collection, Here in Sanctuary—Whirling , out in February 2024. (More info can be found at her website ). Happily retired after many years of teaching business communication at UMass, Amherst, Dina divides her time between writing, social activism, gardening, and caring for her toddler grandchild, Manu. Dina recently completed a memoir, Imperfect Pitch , about her complicated relationship with her musical family legacy, though her years as a Cornell chimesmaster remain a highlight of her time at the Big Red and in her musical life. (See her recent “Chime In” essay !). She also continues to explore how to live a creative life in a creatively challenged universe in her blog, “ Music and Musings .”

As always, everywhere I go I run into Cornell alums! This summer, I met a few on my travels! Leslie Lewit ’79

Leslie Lewit writes, “As always, everywhere I go I run into Cornell alums! This summer (a very busy one), I met a few on my travels! In October, my older sister and I took the Uniworld ‘Enchanted Danube’ River Cruise and the first new friends we met were Roland ’76 and Dona Young . We enjoyed their company and Roland had a lot of fun Cornell stories to share. My husband and I were away for two weeks in Lithuania, Latvia, Estonia, and Helsinki, and of course the small group we traveled with from our Temple Sinai of Roslyn (NY) had connections to Cornell too.

“During the year, I enjoy connecting with all the opportunities afforded to us alums via Zoom and in person, including lectures in politics, art, and travel. However, I especially enjoy Big Red Reads —the books and discussions online offer a lot of amazing info and stimulation. I also manage the Temple Sinai Reads program, and I’m a member of a Roslyn/Lloyd’s Neck Harbor women’s book group. I really enjoy walking miles for exercise while listening to books!

“This year, in a period of six months, we had three weddings! My stepdaughter Lindsay Milner (University of Michigan ’14), married Jesse Katz of Tenafly, NJ, on April 8 in Cancun. On July 22, my son, Jacob Lewit (University of Pittsburgh ’15), married Jenna Strauss of Westfield, NJ, at the Park Loft in Oceanport, NJ. Jenna and Jesse went to University of Maryland together and graduated in 2014! And on October 14, my middle stepdaughter, Mariel Milner (Wisconsin ’13), married Joe Spina of Levittown, PA (Penn State ’12) in Livingston Manor, NY. Guess what good and welfare news I may be sharing next year?!

“I am still dabbling in my interior design and space planning business, currently working with a client who’s building in the Hamptons, as well as a few clients in NYC and Roslyn. I have a consulting business reviewing architectural plans for clients who are in the process of renovating or building. My DEA and space planning experience ensure that the new spaces will have adequate traffic flow and space for the clients’ needs and furniture placement, as well as better aesthetics. I am also a LMSW (Adelphi ’02) and have renamed my business Absolute Heads & Homes—because if your head isn’t in the right place, how can you enjoy your home? If you ever want to connect or say hi, I’d love to hear from you. See you all soon!” ❖ Cynthia Ahlgren Shea ( email Cynthia ) | Danna Levy ( email Danna ) | Linda Moses ( email Linda ) | Alumni Directory .

Hail to thee, classmates. Paul Bechly ’s fondest memory of his years at Cornell is “graduating with a BS in chemical engineering. It was a lot of hard work that led to a lot of good outcomes.” One of those outcomes is that he was just elected as a fellow of the American Institute of Chemists. Congratulations!

Paul just completed 30 years working at Morgan Stanley and has no plans on retiring. When his nose is not on the grindstone, he and his wife, Beth Wells, “have been making an effort to travel the world. We have experienced 130 countries and visited all seven continents.” Unlike your indolent correspondent, he “wakes up every morning with a goal to make the day count for something good.”

Beth Rubin reports that it has been a big year for her family: “In May, our younger daughter married her beloved in the redwoods of California. Then I retired from my position as dean of adult and online education at Campbell University, after developing an associate’s and bachelor’s degree program for incarcerated men and women at two prisons in North Carolina. Our success rate was amazing (approximately 60% of those who started completed an associate’s degree, and 80% of those completed a bachelor’s degree); we had graduation for 17 people in the fall. And the State of North Carolina voted to provide $1,000,000 every year to help the program grow in new prisons, ensuring long-term viability and necessary student support.

“My hoped-for relaxing retirement was interrupted by family needs—a sister needing care after major surgery, a father-in-law who passed away suddenly from a heart attack, and a mother who was diagnosed with stage four cancer and died two months later, on Christmas Eve. So, a long year of joy and sadness ended for us. My mother’s funeral gave me the opportunity to reconnect with cousins who we’d long been out of touch with. My husband, Dane McGregor, is, thank heavens, healthy, and our two kids are working their way through graduate programs. I went on Medicare (like so many others) and hope to travel the world for the next 10 years!”

Paul Bechly ’80 was just elected as a fellow of the American Institute of Chemists.

Beth’s favorite memory from her time at Cornell was “being on the women’s ice hockey and rugby teams. Walking home after games, with my hair freezing (in winter); it was so still and beautiful.” Nowadays, she enjoys her body combat lessons at the local Y.

Steve Benjamin , ME ’81, MBA ’82, reports, “In May 2023, our daughter Megan ’10 had her fourth child. Sheri and I love being grandparents to all four of our grandkids. I’ve got the three older ones skiing. And every February for the past seven years, quite a few Fijis from my era meet up at Alta, UT, for some excellent skiing and camaraderie. The group typically includes Dave Ayers , Tom Croskey , Doug Henderson , MBA ’88, and Dave Phelps ’81 . Others have joined us over the years, and we plan to continue this annual tradition until we can’t. We hope the group will continue to grow.”

Brian Fristensky relates, “Love can be found any time in life. In December 2022, I was so happy to marry Teresa Mayer, also a U.S. expat living in Winnipeg. In attendance were both her and my grown children, and her mother in person, and friends and relatives from all over North America by teleconference. 2023 has been a year-long honeymoon of sorts, in France, Monaco, Hawaii, and elsewhere in the continental U.S.” Brian is a professor of genetics at the University of Manitoba, specializing in bioinformatics. His favorite memory from Cornell was “singing with the Glee Club in Sage Chapel … and at Johnny’s Big Red!” These days, he is making memories singing tenor with the Winnipeg Philharmonic Choir.

Please write to any of us with any news you’d like to share with the Class of ’80. ❖ David Durfee ( email David ) | Leona Barsky, MS ’81 ( email Leona ) | Dik Saalfeld ( email Dik ) | Chas Horvath, ME ’81 ( email Chas ) | Alumni Directory .

I just had my six-year work anniversary with Hadassah, the Women’s Zionist Organization of America. I’m very proud of the work that I do! Construction of the new Gandel Rehabilitation Center at Hadassah Hospital was rapidly accelerated in the wake of October 7. Originally it was going to be finished in the second or third quarter of 2024, but when the war broke out, it had to be finished yesterday. The first patients began receiving care in January, with plans to double capacity in the coming weeks. Since October 7, Hadassah has raised more than $16 million, with $5.5 million going specifically to expedite the work on the Gandel Center.

Near me in Fort Lauderdale is Steve Greenapple , JD ’84, an employee stock ownership plan (ESOP) attorney at SES ESOP Strategies, Stevens & Lee. Steve loved the Chimes concerts on the Hill, the waterfalls (all of them, but most especially Taughannock), and mud-sliding down Libe Slope. He has four great kids, a beautiful marriage, and a career more satisfying than he ever imagined possible. He’s been traveling again—both personal and for business. If you find yourself here in paradise, he hopes you will give him a ring!

This year’s Martin Luther King, Jr. Commemorative Lecture on campus focused on the importance of understanding and addressing systems of oppression and their impact on multiple identities, including race and gender. Kimberlé Crenshaw , professor of law at the UCLA School of Law and at Columbia Law School, spoke at the event, “The Urgency of Intersectional Justice,” on February 19 in Sage Chapel. Kimberlé is a pioneering scholar and writer on civil rights, critical race theory, Black feminist legal theory, race, racism, and the law. Her work has been foundational in critical race theory and in intersectionality, both terms she coined. She is also known for raising awareness about police violence against Black women through her work with the #SayHerName campaign.

Theresa Kronik Wrobel started an e-bike store with all proceeds going to support the Boys & Girls Clubs of Mercer and Warren counties in New Jersey. She found her passion for biking among the steep hills of her hometown, Ithaca, NY, during her teenage years. She continues now with rides in hilly northwest Mercer and western Hunterdon counties with the Princeton FreeWheelers, and she does mountain bike riding in Utah. In recent years she combined her love of biking with community involvement by volunteering with the Bike Exchange and the Boys & Girls Clubs of Mercer County. She is excited to continue these efforts at Princeton eBikes.

Bob Zeidman (Las Vegas, NV) recently published his firsthand account of the story of his debunking the 2020 election fraud “proof” presented by Mike Lindell and the subsequent arbitration that awarded Bob $5 million. The book is titled Election Hacks . Bob writes, “Lindell, the founder and CEO of MyPillow, publicly declared he had proof of voting machine tampering that threw the 2020 election. Having invented the field of software forensics, I was invited by Lindell in 2021 to examine and verify the alleged proof. What I found was bogus data, manipulated results, and dangerous conspiracy theories.”

Terry Steinberg recently earned her purple sash in kung fu and her green sash in kung fu sword. Kung fu is a great exercise, she says. Terry started out as a beginner, and the practice has improved her strength, flexibility, and balance. She lives in Silver Spring, MD.

Theresa Kronik Wrobel ’81 found her passion for biking among the steep hills of her hometown, Ithaca, NY, during her teenage years.

Peter Zenneck is happy in retirement, spending time in London and on the island of Mustique. Elise Kuebelbeck Johnson and her husband, Roderick, also live in London. Elise’s areas of expertise are healthcare, acupuncture, and shiatsu. To their delight, their five children are also in London.

Lisa Dietrich Zimmerman , DVM ’85, is still working as a part-time veterinarian in Nassau, NY, where she grew up. She does mostly ultrasound and surgery. She and her husband, Bill , DVM ’85 , ski all over the U.S. and participate in masters ski racing for fun. They live on a 300-acre farm and walk on it every day. President Rhodes was an inspiration to her, and she loved his speeches. Her favorite memories are of polo houses and roommates Celeste Starr Frohm ’80 , Julie Hansen ’80 , PhD ’89, Hal Schott ’80 , and Sue Seaman Knight . She also has many fond memories of OTS parties, dancing, partying, and surviving the rigors of vet school.

In New England, Sarah Garlan Johansen is an emergency physician at Dartmouth Hitchcock Medical Center in Lebanon, NH, and faculty at Geisel School of Medicine at Dartmouth. Living in Etna, NH, she shares that she’s blessed to have had three healthy children, an amazing husband, and a fulfilling emergency medicine career. She adds that she’s grateful for many things, including that she was able to perform for nine years in professional theater, live in a beautiful vacationland, spend a year in NYC with her son while on Broadway, have wonderful adventures like climbing Mt. Kilimanjaro in Africa, cook many yummy things, and care for many medical students and residents.

Arjun Yodh (Merion Station, PA) tells us that after Cornell, he did his PhD at Harvard and a post-doc at AT&T Bell Labs. Then he joined the physics faculty at University of Pennsylvania, where he has been since 1988. He married Lai Yee Hom in 1986. They are still married and have three kids (grown-up now), Elliott, Jeremy, and Zach. Collectively, they like sports (especially baseball), music (piano), and traveling.

Clay Pittman (Bellbrook, OH) tells us he had two great roommates, Glenn Russo and Carlos Guevara , and really enjoyed their company. His ROTC classmates were great as well, and he really appreciated their friendship and support. After graduation he had a long career in the Air Force as an engineer and pilot. He met his wife at a squadron Christmas party, and he says they have been blessed with six children and a wonderful life together. He retired in 2015 and started a second career in academia. He is still working hard and enjoying the college faculty experience.

Lana Carlsson-Irwin (Wayland, MA) is the co-business owner at Irwin Engineers Inc. Of her time at Cornell, she says she loved summertime going to the reservoir; endless games of mau-mau in those Collegetown digs; the party she threw herself at 106 South Quarry— Mike Pliss ’80 brought his friend, Andy Irwin , ME ’82, who became her husband; playing frisbee on campus with Ellen Wolaner , Mark Amos , and others; and going to the waterfalls with the same gang. Andy and Lana got married graduation weekend. They moved to the Boston area, had three kids, and started their own business, which is now 25 years old. They recently had their first grandchild. They love to travel and continue to explore new places. Lana went to law school too, but she didn’t really like the practice at the major Boston firm and quit to have those kids.

Let us know what’s doing with you—we want to know what’s going on with you, your life, and your daily thoughts! ❖ Betsy Silverfine ( email Betsy ) | Alumni Directory .

Our online memory book has now closed to new entries. If you haven’t yet, or want to again, give it a look to read about old friends and learn more about the fascinating and diverse lives and memories of your classmates.

Manuel Choy of Saratoga Springs, NY, checks in to tell us that he owns a financial planning and investment firm and that his two adult children are now married and engaged, respectively. He enjoys his family, traveling, helping his clients, gardening, and playing basketball. As to his favorite memory from Cornell, his only comment was a big smiley face drawing. That tells it all for a lot of us!

From Corte Madera, CA, Nir Margalit writes to tell us that he is the chief legal officer of a family office investment business. He is one of our classmates who is in the “I still have young children” club, and his biggest satisfaction is his family of wife Jennifer and daughters aged 5 and 8. He enjoyed a “wonderful month in summer 2023 in Israel before the horrible attack.” His favorite memory of Cornell times is “my friendships”; again, heck yeah!

Jennifer Gardiner reports, “On a Christmas trip to visit my three grandchildren (ages 2, 1, and newborn), two of whom live in Virginia, I met up with Steve and Lisa Mummery Crump . They were visiting their daughter and grandson in D.C. We caught up on my life in Charlotte, NC, where I am in my 13th year as the full-time director of the Low Income Taxpayer Clinic at Legal Aid of Arkansas, and the Crumps’ exciting life in Switzerland. I also still play tennis or platform tennis daily, and Lisa still rides horses regularly. I would love to connect with Cornellians closer to home, like in Charlotte!”

The Memphis-based Blues Foundation has named Mark Stenzler ’82 as a recipient of the 2024 Keeping the Blues Alive Award.

Continuing the thread of classmates as authors from Doug Skalka ’s last column, we heard from Mary Ellen Plubell Miller , who lives in Johnson City, TN, with spouse Dan: “I wrote, published, and launched a book in 2023. Fill the Dam Thing Up! Building Connections: Communicating Throughout the Lifecycle of Infrastructure Projects is the story of my seven-year journey as lead communicator on a major ($400 million) infrastructure (dam) project in northeast Tennessee. It’s a communications playbook for project managers and communicators. Cornell gets several mentions! It is available on Amazon in paperback, e-book, and Audible formats.”

The Crumps are not the only classmates living in Switzerland. Mark Stenzler has been recognized for the 35+ years that he has dedicated to putting the blues out there on the airwaves from his base in Bern, Switzerland. The Memphis-based Blues Foundation has named him as a recipient of the 2024 Keeping the Blues Alive Award. This lifetime achievement award was presented to him in January during the 2024 International Blues Challenge in Memphis, TN.

I can’t improve on the foundation’s announcement: “Mark Stenzler, a native New Yorker and former radio pirate with Radio Free Ithaca, has been a passionate radio broadcaster on both sides of the Atlantic since 1978. In the 1980s, he relocated to Switzerland, where he continued his career in radio. A true blues enthusiast and a staunch supporter of public radio, Stenzler is widely recognized as the host of ‘Blues Zeppelin,’ a program he initiated in 1989. Guided by the motto ‘Working hard to make reality a lot less painful,’ he has dedicated his time and talent to create a blues program that offers a blend of the finest blues music, news, and engaging interviews. The show can be heard on several radio stations, including Radio Bern (RaBe) in Berne, Switzerland; Radio LoRa in Zurich, Switzerland; Diis Radio in Canton Valais, Switzerland; WRFI Community Radio in Ithaca; and CJRO Community Radio in Carlsbad Springs, Ottawa, ON, Canada. Stenzler’s contributions extend beyond the airwaves, as he actively collaborates with numerous festival organizers, music promoters, venues, and blues artists at various stages of their careers. From providing first-time airplay to working with award recipients, including Blues Foundation BMA and KBA winners, Stenzler has played a pivotal role in supporting and nurturing the growth of blues musicians and bringing them to the attention of the global blues community.” ❖ Mark Fernau ( email Mark ) | Nina Kondo ( email Nina ) | Doug Skalka ( email Doug ) | Alumni Directory .

Sylvia Han , CFA, CFP, and CSRIC, our classmate and class council member, led a timely Zoom discussion for our class, “Top 10 Retirement Considerations,” on March 19. Sylvia, who works as a wealth management advisor at Merrill Lynch, notes that “a shift has occurred in retirement planning compared to previous generations.” She discussed important issues like defining a vision, financial planning, investment risks, income source planning, sustainable spending rates, Social Security maximization, healthcare costs, and more. For more information feel free to email your class correspondents below.

Anna Esaki-Smith writes, “I’m a very proud Class of ’83 graduate of the College of Arts & Sciences. I went to the 40th Reunion this past summer and had a great time, reconnecting with both the campus and old friends.” Kudos to Anna, who has written a terrific young adult nonfiction book, Make College Your Superpower: It’s Not Where You Go, It’s What You Know, that was published by Rowman & Littlefield in April 2024. Anna adds, “Most books for teenagers about college are full of tips on writing killer college essays or nailing those SATs. Mine gives students a bird’s-eye view on how a university education connects to a tech-disrupted workplace that values skills and creativity.” A wonderful addition to students’ college prep toolkits! Anna also recently penned a “Chime In” essay for Cornellians , which you can read here .

Congratulations to  Helen Schulman ’83 , whose latest book,  Lucky Dogs , was selected as one of Oprah’s ten Best Novels of 2023!

Congratulations to Helen Schulman , whose latest book, Lucky Dogs , was selected as one of Oprah’s ten Best Novels of 2023 ! Helen is presently the fiction chair of the Creative Writing Program at the New School in New York City, where she is a tenured professor. Helen is a New York Times best-selling author of seven novels, including Come with Me and This Beautiful Life . She has received fellowships from the Guggenheim Foundation, the New York Foundation for the Arts, Sundance, Aspen Words, and Columbia University.

Neal Moran writes from New Brunswick, NJ. “I retired earlier this year after 36+ years in banking regulation. I’m keeping busy, including starting a blog called ‘ Upon Further Analysis .’ The blog focuses largely on banking, financial markets, and regulation, but also covers sports, culture, and current events.”

Dan Carlucci and wife Ellen write that they are keeping quite busy in medicine and more. Dan is chair of medical specialties at Reliant Medical Group, a division of OptumCare, and a clinical cardiologist. Reliant serves over 300,000 patients in eastern and central Massachusetts; Dan leads more than 100 specialty clinicians. Ellen is vice president, development, marketing, and communications at UMass Memorial Health–Marlborough Hospital. Dan and Ellen love their time in Northborough and Marion, where they can’t wait to re-start summer sailing adventures with their three adult children on the aptly named boat, No Agenda . Speaking of which, Dan is planning a September 2024 sequel to the original No Agenda weekend—look out for invites! ❖ Stewart Glickman ( email Stewart ) | Nancy Korn Freeman ( email Nancy ) | Alyssa Bickler ( email Alyssa ) | Jon Felice ( email Jon ) | Alumni Directory .

We have some great news to share! Deborah Dawson was recently surprised by Nancy Pistole , who flew from California to New York to join her along with Maurya Kilroy and Karen Kwik Kernan for a reunion. They all met freshman year in High Rise 5 and have been dear friends ever since.

Brad Will sends greetings from New York’s beautiful Mid-Hudson Valley! Over the past four years, his spouse, Sari, and he have been “transitioning” to the Finger Lakes region, his “home away from home” for five years in the early 1980s. They love spending time there, so much so that they have purchased land on which to one day build a “deep green” house and a small commercial property in the Village of Dryden, right up the street from Cornell. More recently, they bought a property that will eventually have several homes constructed. “My transition from architect to developer has begun!” he writes. It’s been an exciting phase, says Brad, and they have a two-bedroom apartment available for travelers to their old school at their “Little House on the Lot” in Dryden. At the time of this writing, Brad was looking forward to their annual BArch dinner in NYC and their trek to RPI to watch the amazing Cornell men’s hockey team take on the Engineers in early February 2024. Big Red almost always prevails! This year has been active and interesting, with projects advancing in both regions—houses, hotels, restaurants, and subdivisions. Seeing good friends is always a great treat, as they did in New Hampshire last summer and in Texas last fall. They look forward to an even more exciting year ahead, with many milestones pending. Is Brad retiring? “No, not yet—much to do!”

Timothy Brown ’84 , MBA ’92, set his first-ever novel at Cornell.

Timothy Brown , MBA ’92, has a very Big Red family! He is a dual-degree Cornellian himself (Arts ’84, MBA ’92), married to another, Nancy (Grambow) ’85 , PhD ’94. In fact, between his wife’s parents and sisters, his brothers, and their daughter, his family has a combined total of 13 degrees from Cornell! Further, his father-in-law, Richard Grambow ’55 , DVM ’57, received the Frank H.T. Rhodes Exemplary Alumni Service Award and the Salmon Award for Distinguished Alumni Service. Thus, it was only fitting that Timothy set his first-ever novel at Cornell. He initially self-published it as A Bolt from the Blue , but recently had it professionally edited and republished under a more distinct title, Cloning the King . It is a scientific/history thriller that explores the nexus of breakthrough cloning technology and medieval history.

Hope to see you at Reunion 2024 next month, June 6–9! And, don’t hesitate to write to your class correspondent: ❖ José Nieves ( email José ) | Alumni Directory .

Hello, fellow 1985ers! Hope all are doing well. I do have a bunch of news from fellow alums, so here you go!

Amy Smith Linton wrote in that she has been busy promoting her first book , She Taught Me Everything . The most enjoyable part for her has been showing up as a guest at book clubs, either via phone or in person, to talk about her novel.

Richard Tuchman reports that he and his wife, Cynthia, retired last year in celebration of their 30th wedding anniversary. They are currently raising puppies in Connecticut. Rick retired from a career in philanthropy, which he describes as “doing well while doing good.”

Susan Stevens Gebo has recently married. She has written, under the pen name S.M. Stevens, a novelette called The Wallace House of Pain , which received a 2023 American Fiction Award. The same story was adapted into a stage script, published by Choeofpleirn Press in their autumn 2023 issue. The characters in the novelette are also featured in her forthcoming novel, Beautiful and Terrible Things (Black Rose Writing, July 2024).

Maria Gallo Ashbrook writes, “The Class of 2023 Commencement weekend was sublime … a string of rare sunny days when Cornell truly is the most beautiful campus on earth. My son, John ’23 , graduated as a government and China and Asia-Pacific studies major (yes, that Mandarin in seventh grade paid off!) and joins big brother Keenan ’20 in D.C. to begin his career. This, of course, warms my little Cornell-in-Washington (’84) heart. I’ve attended nine Cornell Commencements of family and friends, beginning in 1974. This graduation weekend was extra special because we returned to my hometown of Auburn, with festivities across Cayuga, Owasco, and Skaneateles lakes. I guess you can take the girl out of the Finger Lakes, but you can’t take the Finger Lakes out of the girl!”

Virginia Scarola , Maryellen Magee , and Joyce Zelkowitz Cornett had an impromptu reunion in Atlanta when the Cornell Big Red baseball team took on the Georgia Tech Yellow Jackets. Apparently, back in 1991, Cornell defeated second-ranked Georgia Tech, shocking the collegiate baseball world at the time. It took Tech 33 years to overcome the pain and invite the Big Red to Atlanta. Unfortunately, the Big Red lost the first game, though they had been dominating Tech for most of the game. They lost the second game, which we saw after a great pre-game tailgate catered by SmoQ’n Hot Grill owned by Hotelie David Smith ’81 . Nick Salpekar ’96 of Highland Fine Wine and Alan LeBlanc ’84 , who owns Bold Monk Brewing Company, provided wine and beer. Robert Mandelbam ’81 and Mike Fleury ’78 were great hosts for the event! Cornell did take the third game!

The Class of 2023 Commencement weekend was sublime … a string of rare sunny days when Cornell truly is the most beautiful campus on earth. Maria Gallo Ashbrook ’85

Erin O’Connor writes, “ Gail Fink is the CEMS Program Director at Cornell’s Dyson School of Applied Economics and Management, and she travels every December to participate in the graduation ceremonies of her students. CEMS is a global alliance of leading business schools, multinational companies, and NGOs that together offer the CEMS Master’s in International Management. Gail’s friends look forward to attaching their adventures to her travels. This year graduation was in London, so several of us made a trip to enjoy the Cotswolds together. Linda Kao , Susan Herlands Holland and husband Ron Preville, Jim , DVM ’90, and Cheryl Senecal Smith , and me and my partner, Brian Garrett , rented a fabulous Airbnb called the Scotland End Barn in the town of Banbury-Hook Norton for a few days of fun, togetherness, and exploration. Driving was a challenge: thanks to Jim and Ron especially for avoiding oncoming traffic in the wrong lane and near misses with wildlife.

“We visited several towns (and yes, tried to find where the Beckhams lived) with lovely names like Cheltenham, Bourton-on-the-Water, Moreton-in-Marsh, and Chipping Norton. When in England, one must have Sunday roast, and we booked at the Horse and Groom in Bourton-on-the-Hill. Even though we first landed at two different places in the Cotswolds with the same name, we eventually all made it to the same pub and delighted in a very tasty, traditional meal.

“We took full advantage of leaving the car at the BnB and walking to the local venues in our base hometown, but the best had to be our trivia night at the Pear Tree Inn. Naming our team ‘The Yanks,’ we competed with four local teams. When we arrived, the very young bartender texted his mom to hurry and get there because ‘a lot of Americans just showed up.’ A wild time was spent trying to outguess our competitors and the game was tight. We were victorious and became the ‘Damn Yankees’!

“It was such a fabulous time—so wonderful to continue to connect with friends we made when we were so young and have continued to connect with over the years. We mean something to each other, all beginning with our landing in each other’s spheres at our beloved university. Turning 60 in 2023 turned out to be a fantastic celebration that lasted the whole year as we crossed this milestone together.”

Please be sure to send me your news and make a plan to come to Reunion next year! ❖ Joyce Zelkowitz Cornett ( email Joyce ) | Alumni Directory .

My mailbox brings but a few notes from classmates, but lucky for you I have had many Cornell interactions since the start of the New Year.

Our two classmates who wrote in likely had time because they both joined the ranks of the retirees! Elsa Waymer Dempsey retired from technology sales last year and continues to enjoy the good life in Florida. She has been in her husband’s hometown of Venice, FL, for the last 30 years. She and her husband enjoy tennis, gardening, and traveling with their twin daughters, Laura and Erica. Elsa has fond memories of her many friends from field hockey, lacrosse, Pi Phi, and even engineering classes.

Chris Arbogast wanted us to know that, since retiring from software engineering last summer, he has been spending his time sprucing up his home in Nevada.

For many of us, 2024 will bring the opportunity to celebrate an important birthday (if we have not celebrated it already). I wrote this column on February 29, having turned the big SIX-O yesterday. The celebration of Toby-Fest began last month when my husband, Robert Mandelbaum ’81 , and I celebrated our quasiquicentennial (125th) birthday together by hosting a dinner for our friends. We were joined by Steve Kirson from our class, as well as Lynn Mandelbaum ’77 , David Smith ’81 , Jack Chen ’84 , MD ’88, Kathryn Whitbourne ’85 , Frank Goldman ’87 , JD ’94, and Tim , MPS ’88 , and Karen Burkhart Dick , MBA ’13 . Two weeks later, we joined Lori Goldwasser Leiman and her husband, Jose, and Barry Greenblatt ’85 and his bride, Karen, on a brief but celebratory voyage to the Bahamas. Lori, Karen, and I have known each other for over 50 years and have birthdays within six weeks of one another. The winner of the year’s best Facebook birthday greeting was Mark Katz , who likes to remind me of the great fire in Low Rise 9 in December 1982. Mark wrote: “Happy milestone birthday, Toby! Whatever you do, don’t put the appropriate number of candles on a cake and leave the room unattended.” Don’t worry, Mark—there was but one candle on my ice cream scoop last night.

I was thrilled to meet former Big Red pitcher Rob Nelson ’71 , the creator of Big League Chew. Toby Goldsmith ’86

This past weekend, the Cornell Alumni Association of Atlanta hosted the Cornell baseball team when they played a three-game series against Georgia Tech. Families and alumni were treated to tasty tailgating events hosted by David Smith ’81 and Nick Salpekar ’96 . Our team ended on a high note, likely buoyed by the wonderful dinner hosted by Alan LeBlanc ’84 on Saturday night at his restaurant, Bold Monk Brewing Company. The dinner was attended by several members of the 1991 ball team who were the last to play against Georgia Tech. I was thrilled to meet former Big Red pitcher Rob Nelson ’71 , the creator of Big League Chew.

I am very lucky to live in a community with a very active Cornell Club with a variety of events being held throughout the year that offer the opportunity to build friendships with Cornellians from a variety of classes. I hope this column inspires you to write your class correspondents with tales of your 60th birthday bashes and Cornell events. ❖ Toby Goldsmith ( email Toby ) | Lori Spydell Wagner ( email Lori ) | Michael Wagner ( email Michael ) | Alumni Directory .

Welcome to another edition of “What are my classmates up to and why haven’t I sent an update to Whitney and Liz?” Just a reminder that our classmates want to know what you are doing—and a reminder that it doesn’t need to be a major life event! Here’s the latest from my inbox.

Jill Feasley wrote that she and Diane Hirschhorn recently completed RAGBRAI, a 500-plus-mile bike ride across the entire State of Iowa. “After graduation, we promised to visit each other in person at least once a year. For a long time, she would visit me in D.C., or I would visit her on the West Coast. When we turned 40, she suggested we could ‘go somewhere else.’ So, I came up with a 50-year plan to visit all 50 states alphabetically and this year we are up to Iowa. We hope to visit Wyoming when we are 90!”

Jeff Cohen just returned from his annual skip trip out west (Park City this year) with a whole bunch of Kappa Sigs. Those joining Jeff this year included Barry Silverman , Brian Kraff , Dave Alexander , Dave Price , David Andrade , Gabe Boyar , Greg Kennedy , Gregg Rockower , Joe Gottlieb , Randy Wolpert ’86 , Jay Goldstein ’86 , and Rick Bullotta ’84 , BS ’85. In Jeff’s own words, “It’s good to know that even while all of us have grown up, and life has steered us in different directions, we can all interact with each other as if we were all sophomores living in the house together. We just go to bed much earlier.”

Lisa Rathmann Stewart and husband Mike enjoyed catching up in person with several Tri Delta classmates during their 52-day national parks road trip in June/July 2023 from San Diego, CA, to Minneapolis, MN, in their Toyota Sienna “converted” minivan. Unbeknownst to them, Taylor Swift was in concert in Minneapolis the same weekend as Lisa’s Kiwanis Convention, which made walking the streets of Minneapolis a bit more colorful seeing the “Swifties” in costume. While in Minneapolis they enjoyed visiting with Kate St. Vincent Vogl and Debbie Brown ’88 and their spouses. Heading west, they stopped in Moscow, ID, for a visit with Lisa’s parents, Dan ’56 , BChemE ’57, and Pat Lasky Rathmann ’59 . Lisa and Mike ended their road trip with a visit with Tri Delta classmates Chris Neimeth Heijenga and Heidi Heasley Ford and their spouses in Mt. Hood, OR. In July 2024, the Stewarts are looking forward to their next road trip destination in Denver, CO, where they plan to connect with Karen McBride Cleary and Dianne DeMallie in Colorado Springs while exploring the national parks in Colorado. Lisa says, “It’s been so much fun to connect with Tri Deltas while on the road. I highly recommend this as a retirement activity!”

Jill Feasley ’87 and Diane Hirschhorn ’87 recently completed a 500-plus-mile bike ride across the entire State of Iowa.

Alexa Coin Florence shared that she continues to enjoy her staging and design work, including overseeing the design of their new brewery (Great River Brewery) in downtown Davenport, IA. This is a reboot after flooding forced them to close in 2019. “I did manage to perform in one show last February, Barefoot in the Park ; it was a blast and I hope to find (and get cast in) some other production this year. We spend a lot of time with and caring for our elderly parents. While difficult, we cherish this remaining time we have with them. We took two great family trips last year: spring break in New Orleans and in August, Munich, Salzburg, and Vienna. Scott ’88 and I also have tried to go on quarterly long-weekend getaways that have really helped us take a break from our daily responsibilities/concerns.” Their oldest child, Ben, lives in NYC and works for Broadbeam Media. He’s also founded a startup and his own marketing group. Alexa’s youngest, Gabe, is a sophomore at Iowa State University, studying culinary food science. Scott continues to work on growing their business—pizza and specialty baking lines—while they work on reopening their brewery.

Joanne Cappucci Penne , MBA ’93, has been enjoying her work as an independent strategy and innovation consultant for the last 10 years for the Innovation Umbrella . Her oldest, Matt, is a sophomore (engineer) at Vanderbilt, and her youngest, Grace, is a sophomore in high school (with a driver’s license, so out the door every day …). Their 2023 highlight is that they are now a TWO-dog family. Luna is a beautiful 3-year-old Lab, and Toaster is a scrappy, cute rescue. They are inseparable and adorable and provide ongoing entertainment!

Our class council continues to sponsor online webinars to keep us informed, connected, and involved. I hope you will join one in the future and spread the word to your classmates. Keep in touch and continue to share your news by emailing either of us: ❖ Whitney Weinstein Goodman ( email Whitney ) | Liz Brown, JD ’90 ( email Liz ) | Alumni Directory .

Greetings, Class of ’88! I want to start out this column by inviting you to join our Class of ’88 Facebook group . It is a great way to stay in touch with our class, reconnect with old friends, and be the first to hear about upcoming events.

Now, onto the latest news from both near and far. Cindy Bishop Christian and her husband, Joe, moved to Tucson, AZ, in November 2020 from Minneapolis, MN. They recently finished a kitchen renovation and are working on landscaping their surroundings, filled with beautiful cactus plants. They love biking, the Sonoran Desert, and beautiful sunsets. Cindy still works at her family business, Brick Meets Click. Her son, Sean, is an avid competitive cyclist, and he attends Arizona State University online so he can race in Europe with Aevolo and USA Cycling U23 teams. Her daughter, Anna, attends Savannah College of Art and Design in Atlanta, GA, and also races on her university cycling team. Cindy joined the Cornell Club of Southern Arizona and invites any classmates living in the area to join.

Back on Cornell’s Ithaca campus, Beth Milles , associate professor of Performing and Media Arts, directed the production of Desdemona in the fall to celebrate the 30th anniversary of famed Cornellian Toni Morrison , MA ’55 ’s Nobel Prize. Beth is the founder of Banter Company, which adapts classical theater shows for the modern audience. She joined the Cornell faculty in 2001. During the span of her theatrical career, Beth has guest lectured at Harvard University, Brown University, the University of Texas, Austin, Southern Connecticut State University, and Loyola Marymount University. We look forward to hearing about more upcoming theatrical productions.

Harlan Protass writes in from New York City, where he is a criminal defense lawyer and runs his own firm. He is also an adjunct professor at Cardozo School of Law, where he teaches a seminar on federal sentencing guidelines. He has two kids, a daughter, 8, and a son, 10, with his wife who is a literature professor at the CUNY Graduate Center. Every January for the past dozen years, Harlan returns to Ithaca to attend a hockey game with his Alpha Sigma Phi (Rockledge) brothers. “We spend the weekend laughing.” Harlan also noted that “the level of development in Collegetown is a bit shocking. It’s virtually unrecognizable from the 1980s. And, sadly, none of our watering holes still exist.”

Andrew Turner ’88 , MPS ’93, has been appointed the director of Cornell Cooperative Extension.

Speaking of Cornell’s hockey team: Save the date for the next Frozen Apple hockey game on November 30, 2024 at Madison Square Garden in New York City. It’s a wonderful event to get together with fellow Cornellians and cheer on our men’s hockey team. This year’s game was well attended by ’88s and Cornellians from other graduating years.

News flash from Ithaca: Andrew Turner , MPS ’93, has been appointed the director of Cornell Cooperative Extension and associate dean for the College of Agriculture and Life Sciences and the College of Human Ecology. He began his five-year term on December 1, 2023. In his new role, Andrew will oversee the development and setup of several programs including food systems, nutrition, and sustainable energy for Cornell Cooperative Extension, which has a presence in every county in the State of New York. For the past few years, he has worked with and led the New York State 4-H youth development programs. Good luck, Andrew, in your new position on Cornell’s Ithaca campus.

Traci Nagle earned her PhD in linguistics at Indiana University in Bloomington, IN. After teaching for a couple of years, she realized “teaching was not my passion,” so she shifted to administration and now works in the research development office at Indiana University, where she works with faculty to get funding for their research. Recently, Traci was at a conference in Denver and she hung out with Larry Goldman at the beautiful botanical gardens. During Reunion weekend, she was thrilled to reconnect with her freshman roommate Sue Henry Muldoon . They laughed and danced the night away with Jake White and his wife, Sharon Rose. Last fall, Traci spent a weekend in New York City with Lori May and Gail Frieden Le Coz . Lori lives in Columbus, OH, and works as a business analyst for a corporate credit union. Meanwhile, Gail was visiting from her home in London. Together they enjoyed two Broadway shows and dined on New York style-bagels.

That’s all for now from Toronto, Canada, where the spring flowers are blooming. Please keep sending your news to me. I love hearing from our classmates both near and far. ❖ Pamela Darer Anderson ( email Pam ) | Alumni Directory .

As this issue of Cornellians is released, we are about one month away from Reunion 2024! Our indefatigable Reunion chairs— Shannon Gallivan Bol , Carol Borack Copenhaver , Debbie Schaffel , and Dave Scher —have been working for months already. Menus are planned, entertainment is scheduled, housing is being finalized. And the dust is about to be blown gently off the ancient tome containing the magic sunshine spell that is always cast immediately before the planes land and the cars pull into Ithaca. So check your calendar now. There’s just enough time. Come back and visit the Straight—the true home of facetime. “Test” the Suspension Bridge. Listen to the Chimes. (“Groovy Kind of Love” anyone? Maybe not …) Join the rest of us for what is sure to be an all-too-brief weekend of fun, relaxation, great memories, and old friends (plus plenty of new ones too because everyone has at least one very Big Red thing in common).

Now for a wee bit of news from our classmates. (At Reunion you get and share lots and lots of news, by the way.)

One of our illustrious Reunion chairs, Shannon Gallivan Bol (a woman with the heart of an explorer), writes, “I love when road trips take you to places where you have friends! I saw Carol Borack Copenhaver last fall and I also got to visit with Denise Host , who lives in Suwannee, GA. I recently relocated to New Jersey as the result of a new job. I’m excited to be living near many Cornell friends, including Karen Leshowitz Colonna and Michele Dowling Johnson . I started working for Prime Healthcare as regional vice president, managed care. I’m responsible for region two, which is basically the Northeast with hospitals in New Jersey, Pennsylvania, and Rhode Island.”

Another faithful attendee of Reunions past, Doug Merrill , ME ’90, MBA ’91, recently joined the University of Vermont as its regional innovation officer. In this role, Doug leads the GaN Semiconductor Tech Hub that was designated by the U.S. Department of Commerce in October 2023. Doug is looking forward to helping UVM integrate more fully with the technology and manufacturing firms in the region. Doug and Lisa (Peskin) ’90 have lived in Shelburne, VT, for 18 years. Older son Alex ’21 , ME ’21, just moved to Seattle to start a new job with SpaceX. Younger son Jack ’24 is in his senior year at Cornell, studying computer science. Doug and Lisa are fortunate to have Chris Ford and Emily and Bill Kallock ’90 living nearby and see them often in the Green Mountains or on Lake Champlain.

Lisa Spellman Porter ’89 has received numerous awards, including the National Science Foundation Career Award.

Lisa Spellman Porter has also shared that she has a new professional position—associate dean for faculty and graduate affairs for the College of Engineering at Carnegie Mellon, where she has been on faculty since 1997. In this new role, Lisa provides strategic direction and manages matters related to graduate students, postdoctoral fellows, and faculty in the college. Upon hearing this news, I let my fingers wander around the old Internet a bit and learned some things that the ever-modest and unassuming Lisa did not go out of her way to share. For instance, she has received numerous awards during her career, including the National Science Foundation Career Award, Visiting Professor for Women in the Engineering Sciences awarded by the Swedish Research Council, and the Carnegie Mellon Order of the May. According to Dean Bill Sanders, “Lisa is an exceptionally thoughtful and effective leader who has built strong working relationships across campus and has demonstrated exceptional commitment to Carnegie Mellon and the broader academic community.”

And lastly, Melinda Fellner took advantage of the online news form to share the following: “I am thrilled to announce my youngest son Simon’s acceptance to the College of Arts and Sciences for the Class of 2028! Simon follows his brother Miles ’25 and his brother Harry ’22 ! I am the chair of the tax department at Carter Ledyard and Milburn in New York City. Best to all in 2024!”

Thanks for the good wishes and for using the online news form , Melinda! We hope you all will spend a minute or two filling out the form to let us know what you’ve been up to (work, hobbies, day-to-day life, etc.), what’s giving you the most satisfaction lately, what some of your favorite Cornell memories are, and any other bits and pieces that fill us in on you. We’re eager to hear! ❖ Kris Borovicka Gerig ( email Kris ) | Anne Czaplinski Treadwell ( email Anne ) | Lauren Kidder McGarry ( email Lauren ) | Stephanie Bloom Avidon ( email Stephanie ) | Alumni Directory .

We start this column with a message from class president Caroline Misciagna Sussman : “Calling all classmates! Dust off your devices—it is time to start planning for our 35th Reunion—and we need you! Reunion 2025 will be a doubly significant one since we were unable to hold an in-person gathering in 2020. We are anticipating a huge turnout, and we want the event to be like no other!

“It will be 10 years since we have had the opportunity to come together as a class. With all that has changed in the world since 2015, we feel a heightened sense of urgency to make this Reunion truly exceptional from every angle, and we would greatly appreciate your help in doing so. The spectacular plan we had in place for 2020 will serve as a launching point for Reunion 2025. Mark your calendars, save the date: June 5–8, 2025, and help us create an unforgettable weekend of memory making!”

Our class council and Reunion chairs are gearing up for the Reunion planning kickoff meeting on October 5. We’ve got a lot to do before then, namely fundraising and building social media connections. If you would like to help with Reunion planning, please contact one of our Reunion chairs, Dave Coyne or Elinor Langfelder Schwind . If you have stayed well-connected and can help build our affinity group and class connections on Facebook, Instagram, LinkedIn, and other social media platforms, contact class correspondent Rose Tanasugarn or web community manager Kristyn Benzinger Whitney . If you can serve on the fundraising committee and contact classmates to encourage contributions to our class, please contact Cornell Annual Fund co-chair Karen Mitchell . They can all be reached at cornellclass90@gmail.com .

Last fall, Karen became chief human resources officer at Newmark, a NYC commercial real estate advisory firm. She and husband Rob Chodock ’89 plan to celebrate both their 25th anniversary and son Hudson’s bar mitzvah in southern Spain, where Rob spent a semester abroad. Karen regularly catches up with our Chi Omega sisters Maria Scaltro , MBA ’02, Kristen Alloway Sokol , Alisa “Gil” Gilhooley Brown , Marla Spindel , Jennifer Radner Elgin , and Tracy Dillmann Kulikowski at her house in Rhode Island or during their annual trip to Mexico.

In February, I caught up with Cornell Asian Alumni Association secretary Ivan Sim ’95 and vice president of community engagement Charles Wu ’91 at a rain-postponed Cornell Cares beach clean-up. About 20 Cornellians, family, and friends from the Cornell Club of Los Angeles gathered at Cabrillo Beach to help Heal the Bay, an environmental nonprofit organization that has been dedicated to making the coastal waters and watersheds in Greater Los Angeles safe, healthy, and clean since 1985.

Representing the U.S. at the 2013 and 2017 World Maccabiah Games in Israel, Monte Frank ’90 , JD ’93, won four silver medals and two bronze medals.

Angel Orengo and I belatedly celebrated our February birthdays over breakfast at Plateia on the UCLA campus. I met Angel’s lovely wife, Rocio Aquino, and although it was the first time I had met them, I felt an instant connection. It turns out that Angel and his family lived in Hong Kong for six years during his time with Sony Pictures. They occasionally visited Osaka and Kyoto, as Angel supervised a distribution sales team in Japan. They are the proud parents of incoming freshman Mia Orengo. Angel and Rocio co-authored a book called The Orchid: The Secret Code of Modern Goddesses , a unique work about emotional resilience, female solidarity, and the power of self-reflection, in that it also allows readers to become active participants in their own personal journeys in growth, home, and self-love. They look forward to meeting Cornellians across the country as they start their book tour to spread their message of positivity—“this or something better, for the highest good of all concerned,” she says, which closely echoes Ezra’s words and the theme of Cornell’s current fundraising campaign, “to do the greatest good.”

Jane Hyun has been on TV, on podcasts, and in print media, addressing the impact of anti-Asian violence and hate crimes affecting Asian Americans in the workplace and in their communities. In April, she launched Leadership Toolkit for Asians , a follow-up to her book Breaking the Bamboo Ceiling . In-person events will be taking place at the Cornell Club of New York and other Cornell clubs, so keep your eyes and ears open. Jane looks forward to helping Asian leaders build their capability to lead and influence by embracing their cultural strengths and mapping achievable career paths. Last year, she launched the “Culturally Fluent Leader Academy,” a virtual and in-person learning experience. Jane has also been an advisor to the diversity council for the American Heart Association.

Monte Frank , JD ’93, received the John Eldred Shields Professional Service Award from the Connecticut Bar Association in recognition of his many years of outstanding service for the benefit of the legal community and the community at large. Monte serves on the American Bar Association’s Advisory Commission to the Task Force for American Democracy and serves as a special advisor to the ABA’s committee on gun violence. An avid cyclist, Monte competes on the road and in mountain bike and cyclocross races throughout the Northeast and Canada. Representing the U.S. at the 2013 and 2017 World Maccabiah Games in Israel, he won four silver medals and two bronze medals. He founded and led Team 26 on the Sandy Hook Ride on Washington (2013–19).

In closing this column, a heartfelt congratulations to David Cohen for his successful re-election to District 4 of the San Jose City Council! You can learn about all the great things David is doing for his community here .

Please let us know how you’re doing the greatest good in your neighborhood! ❖ Rose Tanasugarn ( email Rose ) | Nancy Solomon Weiss ( email Nancy ) | Allan Rousselle ( email Allan ) | Class Facebook page | Alumni Directory .

Family and friends, turkey and football, and … Cornell Big Red hockey at NYC’s Madison Square Garden have become an annual tradition for many during Thanksgiving break. About 100 classmates, friends, and family members joined our class block of seats to re-live the Lynah Faithful traditions and see Cornell play the latest “Safe-ty school! Safe-ty school!”: Boston University.

I ( Joe Marraccino ) found myself there among the spirited sea of red, including friends Michael Clifford ’90 , BS ’91, Chris and Joyce Martir Dugan ’90 , Thomas Greenberg , Sanjeev Dhawan , Jeff Weintraub , MD ’95, Alix Mellis-Brown , John Martin , Andrew Stein ’90 , and Glenn Haber ’92 . I caught up with some of our other hockey enthusiast classmates too.

Eapen Chandy , MBA ’97, graduated with an electrical engineering degree followed by an MBA in ’97, and lives in South Glastonbury, CT, with his wife and four children, ages 20, 18, and 15-year-old twins. Eapen shared a picture taken more than 10 years ago of his uniformly smiling family in the stands. “I am passionate about sports, including Cornell hockey, and it has been an annual family tradition to see a game either in New Haven, CT, or at MSG!” Eapen also loves his music, mostly classic rock, and his career “has been spent largely in financial services. Currently I serve as the treasurer of Coalition Inc., a cyber insurance startup, which is exciting at this stage of my life.” Glad to see Eapen doing well; his life is anything but “Bor-ing! Bor-ing!”

Kulravee Puttharuksa Keegan is a self-proclaimed “suburban hockey mom.” She graduated from the College of Human Ecology with a major in human development and family studies, and currently lives in Eastchester, NY, where she is a practicing physician. Kulravee has been to a number of games throughout the years. “My son and his friends play youth hockey, so they enjoy going, and get a kick out of the cheers, taunts, and Big Red traditions!” The family’s favorite taunt? “It’s all your fault! It’s all your fault!” Of course it is.

I am passionate about sports, including Cornell hockey, and it has been an annual family tradition to see a game either in New Haven, CT, or at MSG! Eapen Chandy ’91 , MBA ’97

Loretta Dougherty Gallo just attended her first Cornell hockey game at MSG, perhaps the start of an annual tradition! Loretta, an animal science major back on the Hill, shared, “I am originally from the Bronx and now live in Pelham, NY, with my husband, Fred ’90 , and our 10-year-old twins, Josh and Hannah. I am a veterinarian and in my (ha ha) free time I enjoy reading and attending my son’s hockey games and my daughter’s horseback riding lessons.” Loretta and family followed the game intently. “It was especially great to be able to share it with our kids, since our son is a goalie playing for Pelham Youth Hockey and Ian Shane ’25 played an amazing game in goal for the Big Red!”

I agree, Ian is no “Sieve! Sieve!” We may see him more regularly at MSG and other professional hockey arenas soon. Loretta and Fred are hoping to continue other Cornell traditions. “The joke in our house is that we won’t force Josh and Hannah to choose Cornell, but with seven undergraduate schools to choose from, why wouldn’t they!?”

The good news is that we all went home happy. “Warm up the bus! Warm up the bus!” Cornell won a thriller against BU. Whether you have attended this annual game in the past or are looking to start a new Thanksgiving tradition, hope to see you with the “Rocket’s ‘RED!’ Glare” next time around!

Got news to share? Use the online news form or feel free to contact one of us directly: ❖ Joe Marraccino ( email Joe ) | Evelyn Achuck Yue ( email Evelyn ) | Susie Curtis Schneider ( email Susie ) | Ruby Wang Pizzini ( email Ruby ) | Wendy Milks Coburn ( email Wendy ) | Alumni Directory .

Paul Sung Bang Yang , ME ’95, enjoys spending time with his family and close friends, as well as visiting and reconnecting with places where he has spent time over his lifetime. He is working in virtual reality, augmented reality, metaverse, and education. He started a global leadership program and is working with real estate developers and making films. His favorite memories of Cornell are spending time with friends, enjoying a good meal, collaborating on projects, watching movies, enjoying the campus, and getting to know some of the professors.

Melissa Ditmore ’90 , BA ’92, writes that the paperback edition of her book, Unbroken Chains: The Hidden Role of Human Trafficking in the American Economy , was released April 30.

Matt Hutcheson , MS ’95, invites you to join him, Jason Markel ’93 , and Doug McGhee online to play the multiplayer game Galactic Trader for free. Enjoy early ’90s Cornell nostalgia flying around the galactic universe, trading luxuries, and battling Thargoids!

John and Janine Blanchard Huber have relocated to Indianapolis, IN. John serves as head of school at Sycamore School, a PS-8 independent coed day school, serving the needs of academically gifted students. The family is planning a visit to Ithaca as the youngest considers college choices!

Brad Minnich has enjoyed a successful career in Hollywood. He specializes in visual effects (CGI), which has allowed him to work on recent films like Batman , Aquaman , Justice League , and many others. His career has taken him around the world to shoot many movies through Europe, Africa, and India. He and his wife, Kiesha, have celebrated 24 years together. They have two inspirational daughters, Laila, 17, and MiaSol, 15, who are leaders in their school and captains of the high school volleyball teams. He enjoys staying in contact with many Cornell alumni and remembers his days on the Hill often—especially being introduced to filmmaking, which help shaped his entire life!

Finally, Amy Frome Saperstein shares that the Cornell Class of ’92 officers organized a cocktail hour in NYC at Effy’s Café on the Upper East Side. About 30 alums gathered and reminisced about their days at Cornell. Most of the group lives in Manhattan but some came from Westchester, New Jersey, and Connecticut. Everyone agreed that more cocktail hours should be planned in the future! ❖ Sarah Ballow Clauss ( email Sarah ) | Wilma Ann Thomas Anderson ( email Wilma Ann ) | Jean Kintisch ( email Jean ) | Alumni Directory .

Classmates, how are you? No, really. I am writing this in February, hoping with every ounce of my being that when you are reading this in May, there is genuine peace in the world and on our campus, with open, constructive communication and support for outlets and oases of healthy socialization.

Our ’93 magician extraordinaire Steve Cohen is still bringing it in NYC at the Lotte New York Palace: you never know who you might sit next to at his show, “Chamber Magic”! Recent guests include actors Cate Blanchett and New York Yankees first baseman Anthony Rizzo. Steve’s new book, Confronting Magic , is now available. It has a sensational foreword by Academy Award-winning film director Guillermo del Toro, and according to the website, “If you’ve been to the show there’s a good chance your photo is included!” Explore his website for info on the book, tickets, and more.

Our class president, Mike McMahon , just returned from an epic trip to New Zealand: “Great trip, highly recommended!” He and our former ’93 president Earl Pinto organized social events for our class officers who reunited in Baltimore, MD, in February for the annual Cornell Alumni Leadership Conference. Please consider joining our class council; we would love to welcome more of you to the party and the planning!

Thank you to our council member Pamela Fabrizio Barry , who shared that she recently reunited with Yvette Politis to celebrate the anniversary of fellow Cornellian Amy Zura Neary ’95 . Tamar Dolgen connects with classmates Jackie Finkel Kauff and Tracy Newman Porosoff as they serve together on Cornell Hillel’s board.

Grateful to Tamar for sharing her recent life update: “After decades of working with startups, global brands, and nonprofits, I transitioned my marketing and communication expertise into college and career advising. I run my own firm, Go Future Advising, and work with the nonprofit Step Ahead Idaho.” Congratulations, Tamar!

Classmates, please connect to share your updates, reunions, or milestones, or for any reason at all (Big Red or not). Take care, and please share. ❖ Melissa Hart Moss, JD ’97 ( email Melissa ) | Mia Blackler ( email Mia ) | Theresa Flores ( email Theresa ) | Alumni Directory .

Happy spring/summer, everyone! I hope all of you plan on going to our Reunion, June 6–9! Thirty years is no joke!

One of our fellow classmates was planning on working in one of the tents on the Arts Quad for Reunion. Derek Edinger , ME ’95, writes, “My wife, Stacey (Girard) ’95 , and I quit our regular day jobs (aerospace and hotel, respectively) back in 2020 and opened Brewery Ardennes in Geneva, NY, in 2021. It’s never too late to make a crazy career change and pursue your passion.”

Paul Bamundo also has a new job update; he recently became CEO of the National Pickleball League (NPL). In this role, Paul will lead this premier league of Champions Division (age 50+) professional pickleball players in its second year in 2024. Paul notes: “It is nice to be the young person in the organization now that I am 50 years old myself! I look forward to seeing many of you as the NPL tours the country this year.” I am sure that many 1994 alums have tried pickleball already at some point!

Lastly, Jarrid Whitney shared some career news of his own. “This past fall, I started a new job at Dartmouth College as the inaugural assistant vice president of enrollment for access strategy. This is a ‘full-circle’ moment for me and my family as I started my admissions career there nearly 29 years ago being on the frontlines of diversity recruitment, met my future wife in that same office, and now have the privilege to be a thought-partner with the college’s leadership on issues of which I’m most passionate. But don’t worry, CU peeps—although I may now have more Green in my wardrobe, it’s all Red whenever CU competes against Dartmouth!”

Keep sending in those updates!  You can send news to me or the other correspondents via email, Facebook, or the online news form . Best wishes for a great summer! ❖ Jennifer Rabin Marchant ( email Jennifer ) | Dika Lam ( email Dika ) | Dineen Pashoukos Wasylik ( email Dineen ) | Alumni Directory .

More 50th birthday stories kick off this month’s column! Elizabeth Leff writes that in March 2023, she and Lauren Blick Rotko , Stephanie Cosner , Jennifer Damashek Strassler , Alyse Kramarow , Stacy Lalin Poritzky , MBA ’00, and Jennifer Stevens Dickson carried on their once-every-five-years girls’ weekend tradition, celebrating the big 50th birthdays in Palm Springs together, including amazing hikes in Joshua Tree National Park. She also had a big birthday bash in Brooklyn, NY, co-hosted by Holly White , with help from her sister, Bonnie Leff ’91 .

The year also saw some work-related changes for Elizabeth—including a new role in the U.N., where she has worked since 2005 (first at UNDP and then at the U.N. Secretariat), leading the team in the Under Secretary General’s office that helps improve how operational support is provided across the organization. In the fall, she also saw off her husband, whom she met at the U.N., on an assignment to Kyiv, Ukraine. Though his assignment in a country at war causes stress, at least it also provides opportunities to meet up in Europe during his R&R, which they already took advantage of—visiting 10 countries in Central and Eastern Europe in a whirlwind trip over the holidays, bringing the number of countries she has visited to 109.

Stephanie Cosner sent in some exciting news of her own as well—she was recently appointed provost at Simmons University, following her role as dean for six years and, prior to that, her work as a tenured professor at Boston College.

Anne Catlin Johnson reports some big-time 50th birthday celebrations, starting in July of last year (her actual birthday was in December!). Writes Anne, “In thinking about how I wanted to celebrate, I realized that the people were more important than the activities or venues, and then went big on plans with great friends! I planned and executed a European adventure with five of my friends from grade school, starting with a glorious cava-soaked spin through Barcelona before proceeding to Geneva and finally Paris. Everyone had a blast, and the trip went off with nary a hitch, so now I am thinking about becoming a boutique travel guide as my next act—message me if you’re looking for an excellent tour leader! In August, we moved daughter Natalie to Colby College (Maine) via a Springsteen concert in Boston—after 40 years of fandom, I finally got to see the Boss! Somehow, I had never seen Billy Joel either, so I went to his show in Baltimore with Matt , ME ’96, and Alison Torrillo French in October, right after taking my dad out to the ballpark for the first game of the ALDS (O’s lost; still a good game).

“Just before Thanksgiving, we headed south to Margaritaville at Sea with another grade-school friend and her family—a short but very fun cruise! The almost-finale week started on December 6 with the musical SIX in Denver, a cooking class on December 7, and Las Vegas on December 8–9 to see U2 at the Sphere with Edie Marshall ’96 . On Sunday, I hiked the 50 Year Trail in Oro Valley, AZ, with my best friend from seventh grade, who is one day older than I am, before we headed to Miraval on my actual birthday for some spa/healing time. A crazy day trip to NYC to see Some Like it Hot before it closed happened on the 20th before we headed to Steamboat for skiing. The last hurrah was a Disney World weekend in mid-January with two more friends from way back. I’m still teaching engineering at the Air Force Academy as a reservist but am planning my winter home in Tucson since retirement and the empty nest are right around the corner!”

In August, we moved daughter Natalie to Colby College (Maine) via a Springsteen concert in Boston—after 40 years of fandom, I finally got to see the Boss! Anne Catlin Johnson ’95

Also stretching out the big 5-0 was Mindy Goodman Sickle , whose celebration started 50 days before her birthday in June. Writes Mindy, “My husband and kids gave me a small gift every day leading up to my birthday. My friends and family, including Sara Ende Masri ’96 , pitched in on certain days. I then had a few small celebrations with family and friends. The celebrations culminated in a trip to Curaçao with my husband and no kids. It was exactly what I wanted.” Mindy and her husband currently live on the Upper West Side of Manhattan and have three kids: Preston, 19, a first-year student at Syracuse; Jordyn, 18, a senior in high school heading to Tufts next year; and Spencer, 15, a sophomore. “Raising kids here is challenging and rewarding,” she says. “My kids went to three different high schools in three different boroughs; they’ve been traveling around the city via public transportation since they were in sixth grade, and my two oldest got their driver’s licenses at 17 so they can be our ‘Uber’ driver home after a night out!”

Now for some non-birthday related arts and culture news! Brett Schwartz shared that on November 11, he was awarded an Emmy at the 65th Annual Chicago/Midwest Emmy Awards presented by the Chicago/Midwest Chapter of the National Academy of Television Arts & Sciences. He won the award for his film, Raised Up West Side, in the category of Outstanding Achievement for Documentary–Cultural.

Best-selling children’s author Michelle Knudsen released her new picture book, Luigi, the Spider Who Wanted to Be a Kitten , on March 5, 2024. It’s illustrated by Kevin Hawkes, who illustrated her book Library Lion , and she is very excited to share it with readers.

And, of course, we cannot let a column go by without a shout-out to another Cornell legacy! Melissa Biren Singer shared that she and husband Scott ’94 ’s younger daughter, Jordana, was accepted to the Cornell Class of ’28 (human development major in CHE). She will be joining her older sister, Kayla ’25 , who has been loving her Cornell experience. Writes Melissa, “We are looking forward to the girls having a year together on campus and will be visiting as much as they will let us!”

Stay connected and safe, classmates. ❖ Alison Torrillo French ( email Alison ) | Class website | Class Facebook page | Class Instagram page | Alumni Directory .

Registered dietitian nutritionist Frances Largeman-Roth has recently published a cookbook called Everyday Snack Tray , which, in the words of the subtitle, offers Easy Ideas and Recipes for Boards That Nourish for Moments Big and Small . There are tips for snack trays to suit a wide variety of occasions—including playdates, tailgates, romantic get-togethers, and various holidays—as well as guidelines on how to make them more nutritionally sound.

Frances is a contributor to several publications, including Today.com , Parents, Parade , and Shape , and has appeared on the “Today” show, the “Dr. Oz Show,” the “Rachael Ray Show,” “Good Morning America,” “Access Hollywood Live,” QVC, CNN, and more. She is a member of the James Beard Foundation and the Academy of Nutrition and Dietetics. Frances, her husband, and their three kids live north of Manhattan, in Dobbs Ferry, NY. To learn more, visit her website or follow her on Instagram . ❖ Janine Abrams Rethy ( email Janine ) | Marjorie Polycarpe Jean-Paul ( email Marjorie ) | Catherine Oh Bonita ( email Catherine ) | Alumni Directory .

Couples’ therapist Alison Bulman recently offered sage advice to Big Red alums in a Cornellians story about mindful communication. “The key is getting to a place of compassion toward your partner. And you do that by getting curious about what it’s like to be them, putting yourself in their shoes—in other words, empathy,” she says. “The idea is to approach each other with acceptance and talk about what it’s like between us right now . In our society, we talk way too much about things—work, the weather, surface stuff. We talk very little about our feelings. If we talk about what’s happening between us right now, we’re going to feel much closer to the other person, much more intimate.” Based in the New York metro area, Alison holds a master’s in social work from NYU and practices online therapy. She also hosts couples’ workshops and offers an online course designed to promote intimacy, among other offerings.

I hope you all took the time to fill out and return the Share Your News form that was recently mailed to you. If you haven’t yet, it’s not too late! Please do send us your news—via the hard-copy form or the online news form —so our future class columns can be full of news from all of you. Whether your news is ordinary or extraordinary, we want to hear it! ❖ Sarah Deardorff Carter ( email Sarah ) | Erica Broennle Nelson ( email Erica ) | Alumni Directory .

Having celebrated our 25th Reunion on campus last June, many of us are celebrating our 30th high school reunion this year! Reunions, official or not, are always great opportunities to reconnect with friends, reflect on the lessons we have learned, and recommit to continued growth. The Class of 1998 has much to celebrate with family and friends, and this column is the place to share all the great and fun things we have accomplished.

U.S. Army Lt. Col. Brett Walker recently wrote an article featuring our classmate Jamie Critelli and his work as a U.S. Army Major of the 353rd Civil Affairs Command (CACOM). Here is a snippet: “Food supply chains and the associated effects on future military operations is one of the many nuanced civil-military fields in which the soldiers of the 353rd CACOM provide expertise to the U.S. military. Maj. Gustavo Ferreira and Maj. Jamie Critelli of the 353rd CACOM have published nine scholarly papers on the agriculture-related limits to proposed military actions across the globe. Critelli worked his way through the ranks, having joined the Army in 1998 through Cornell University’s ROTC program.”

Jamie learned of the Army’s 38G Civil Affairs program—which provides military leadership with subject-matter experts in 18 specific fields—from a civil affairs officer while they were deployed together in Iraq. “I was the first person in the unit to put together a 38G packet,” he said. “A few months later I came across Maj. Ferreira and helped him submit a packet. Since then, I’ve put together about 40 packets for 38G. I do about two per month.” Articles that these two co-authors have published include “Does China Have Enough Food to Go to War?” and “Taiwan’s Food Resiliency—or Not—in a Conflict with China.”

Starting a new adventure? Connected with an old friend? Share your latest news with us by filling out the online news form or you can always email me. ❖ Uthica Jinvit Utano ( email Uthica ) | Alumni Directory .

Adam Ross joined law firm Keane & Beane PC on January 1, in their Long Island office in Melville, NY. Adam represents public employers in a broad range of employment-related matters. For school districts and BOCES, he provides guidance on probationary periods, tenure, recall, and performance reviews. He previously served as general counsel to the United Federation of Teachers. Congrats, Adam!

Reunion 2024 in June will feature our very own Andrew Ross Sorkin as the esteemed Olin Lecturer! Andrew is an award-winning journalist and author, CNBC “Squawk Box” co-anchor, DealBook founder/editor, and co-creator of the Showtime series “Billions.”

What is something you’re doing now that you never thought you’d be doing? What is your fondest memory of your time at Cornell? What brings you the most satisfaction these days? No matter if your news is big or small, please take a moment to write to us and stay connected with our class. ❖ Class of 1999 ( email c/o Alexandra Bond ’12 ) | Alumni Directory .

Hello out there! I hope this little note finds you in good health and spirits. I am enjoying the warmth of the season in a new home, and, as you can imagine, it’s a busy time. It was nice to receive news from fellow alumna Katie Dealy .

In her own words: “Since June 2022, I have served as the director of engagement in the Office of U.S. Surgeon General Vivek Murthy. Despite lots of travel, it has been a profound honor to serve in this role, with these colleagues and during this time, particularly as we have raised awareness around the youth mental health crisis and the epidemic of loneliness. For the last 12 years, my husband, Alan Polansky, and I have lived in Evanston, IL, with our three boys (ages 15, 12, and 8). When I am not at work, and not on the sidelines of a youth sporting event or theatrical production, I’m chairing the Cornell Class of ’64 JFK Award alumni board, and playing phone tag with dear friends from Cornell days.”

That sounds incredible; thanks for sharing, Katie. What are you up to in this great, big, wide world? I’d like to read about it, and I’m sure I’m not alone. So share your story with us through the Share Your News link below, or drop me a note! ❖ Denise Williams ( email Denise ) | Alumni Directory .

As I write this update, the Cornell Daily Sun (hope you all still read this from time to time!) just published a story about the Faculty Senate voting to discontinue median grade visibility on transcripts, a practice started 15 years ago. We can add this to the list of “glad we didn’t have to deal with that back in our day” (see also: Snapchat, doxxing), which feels like a good way to appreciate entering our midlife phase.

Speaking of now-defunct initiatives that started after our time on the Hill: would you like Cornell to bring back the New Student Summer Reading Project ? (I am still meaning to read Guns, Germs, and Steel , which had kicked things off after our graduation in Summer 2001 … maybe this time?) If so, here’s a contender: Hidden Hate: The Resilience of Xenophobia by Mathew Creighton . Once merely one of our classmates, Mathew is now an associate professor in the School of Sociology at University College Dublin, a national coordinator of the European Social Survey in Ireland, and the principal investigator of a Horizon Europe project, EqualStrength , which assesses prejudice in work, childcare, and housing throughout Europe.

Fun fact: Our class has 3,593 living alumni, plus 65 “non-degreed” classmates. If you’re one of them and you’ve read this far, go to our class Facebook group or Instagram page (or find me on Linkedin: I’m the only Nicole Neroulias Gupte ) and send a message that says “tower pumpkin.”

Spotted in person: my husband, Salil Gupte , and I ran into Erin Colling Cleofe at Seattle’s University Village Apple Store over winter break, and we also met up with neighbors Chisaki Muraki and Schaun Valdovinos . Everyone’s doing a pretty good job keeping up with their outdoorsy kids, PNW style. I hope to see them again—and any other classmates around?—next month when we’re back in town again from Delhi. (P.S., for more on me and Salil, check out the Cornell Daily Sun ’s column in the new Group Notes below!)

My husband, Salil Gupte ’01 , and I ran into Erin Colling Cleofe ’01 at Seattle’s University Village Apple Store over winter break. Nicole Neroulias Gupte ’01

Spotted on social media: Eddie Perez-Cortes caught up with Michael and Susan Mueller Hanson while in D.C. over New Year’s. “The kids had a great time visiting the monuments,” he writes. Nageeb and Fatema Gunja Sumar took their kids to the Harvard-Cornell game at “Lynah East” soon afterwards. Mike Kalogiannis started a new position as “field medical, vaccines” at Pfizer. Ali Solomon Mainhart was part of an exhibit, “From Lines to Laughs: Women+ on Men” at the Society of Illustrators, in New York City—then got to celebrate her wedding anniversary with a mid-February snow day. (The best gift for a coupla teachers, amirite?)

Speaking of gifts for teachers, did you ever take a class with Prof. Juris Hartmanis? He passed away in 2022, but I’ve just come across the tribute to him penned by Ryan Williams , ME ’02, a professor of electrical engineering and computer science at MIT. An excerpt: “I don’t know why Professor Hartmanis believed in me. During that period in my life, I felt like nobody else did, and it felt odd that the Turing Award winner was the one who believed the most.” I only took one engineering school class—CS 99, convinced by Jackie Sobota that we should try to get some entry-level knowledge while working the CIT Help Desk and supervising the Mann Library computer labs!—but I’m reminded of a few of my busy teachers in Ag and Arts who also found ways to encourage students at pivotal moments. We salute you, good teachers everywhere.

And lastly, Marisa Laks , one of our class officers and a Computer Science Teachers Association (CSTA) Equity Fellow, will be speaking at the group’s annual conference in Las Vegas in July. Check out the article she wrote for the CSTA Voice on “ Creating a Sense of Belonging in the CS Classroom .”

Don’t forget to get in touch with your local Cornell alumni group to see if they’re planning a student send-off this summer! Those are great opportunities to answer questions from anxious parents (if not the kids themselves) and network with fellow alums.

Want to share an update or a memory, or get back in touch with classmates? Interested in proposing an event or helping out with our 25th Reunion planning? Please let us know by posting to our Cornell Class of 2001 Classmates Facebook group or sending an email to your friendly class correspondents. And, as always, visit our class website for more information and volunteer opportunities. ❖ Nicole Neroulias Gupte ( email Nicole ) | James Gutow ( email James ) | Alumni Directory .

What is something you’re doing now that you never thought you’d be doing? What is your fondest memory of your time at Cornell? What brings you the most satisfaction these days? No matter if your news is big or small, please take a moment to write to us and stay connected with our class. ❖ Class of 2002 ( email c/o Alexandra Bond ’12 ) | Alumni Directory .

Adam Crouch recently became CEO of Redbubble, the largest marketplace for independent artists, whose designs get printed on graphic tees, stickers, and other items. Redbubble is based in San Francisco and Melbourne, and in the past year had 5 million customers buying 4.8 million different designs. Congratulations, Adam! ❖ Jon Schoenberg , ME ’03 , PhD ’11 ( email Jon ) | Candace Lee Chow , PhD ’14 ( email Candace ) | Alumni Directory .

There’s still time for you to make plans to join us on the Hill for our 20th Reunion, June 6–9! Reunion can be as short or as long as you want it to be—you can make it an all-inclusive weekend or a quick overnight trip, attend all the sponsored events or choose your own adventure. Come alone, bring a guest, or bring the whole family! There is something on the schedule for everyone, with dozens of events planned for the weekend, including performances, athletic events, Greek receptions, tent parties, lectures, tours, and meals.

Our class headquarters is Mary Donlon Hall on North Campus. Refreshments and activities will be available all weekend. Most of the meals are taken care of, but there is plenty of opportunity to hit your favorite spot. There will also be plenty of family-friendly activities available at HQ and throughout campus.

Class-specific events include: a wine tour, a tour of the Cornell Veterinary Biobank (where you can explore the world of scientific preservation), a cocktail hour and dinner at the Nevin Center welcome tent, and breakfast in the new Toni Morrison Hall on North Campus. And, of course, the Olin Lecture (featuring Andrew Ross Sorkin ’99 , award-winning journalist and author), a Chorus and Glee Club concert, the Reunion 5K through the Botanic Gardens, Redstock (where Cornell musicians and bands unite for an epic alumni concert), Cornelliana Night, tent parties, and more can be enjoyed throughout the weekend.

It’s hard to believe 20 years have come and gone. Don’t miss this chance to come back to the Hill for a fun-filled and memorable weekend! ❖ Jessi Petrosino ( email Jessi ) | Alumni Directory .

Believe it or not, our 20th Reunion is only one year away—June 5–8, 2025—so be sure to mark your calendars! We have extra celebrating to do this time around, after our 15th Reunion was made virtual, so let’s make this one a weekend to remember. And if you don’t yet pay dues, now’s a great time to start! Help us support our class and our next reunion by signing up here —and submit an online news form so our future class columns can be full of news from all of you! ❖ Hilary Johnson King ( email Hilary ) | Jessica Rosenthal Chod ( email Jessica ) | Alumni Directory .

We don’t have any news to share from these classes this round. We hope you took the time to fill out and return the Share Your News form that was recently mailed to you! If you haven’t yet, it’s not too late! Please do send us your news—via the hard-copy form or the online news form —so our future class columns can be full of news from all of you. Whether your news is ordinary or extraordinary, we want to hear it! ❖ Classes of 2006–2008 ( email c/o Alexandra Bond ’12 ) | Alumni Directory .

There’s still time for you to make plans to join us on the Hill for our 15th Reunion, June 6–9! Can you believe it’s been 15 years since we graduated from Cornell? So much has changed for us and for Cornell, but the sense of belonging to the Cornell family remains constant. Whether you’ve frequented campus since graduation or haven’t made the trip back yet, now is the perfect opportunity to explore all the changes, revisit your favorite spots, reconnect with old friends, and rediscover your love for Cornell. Start making plans to join your friends and classmates for an amazing weekend filled with class festivities and university events.

You can indulge in athletic activities, attend lectures, take tours, join Greek receptions, participate in college events, enjoy musical performances, attend tent parties, and more! Reunion can be as brief or as extended as you desire—an all-inclusive weekend vacation or a quick overnight trip. Our class has organized several special events for families and individual travelers alike. Attend an ice cream social on Saturday afternoon or choose to visit some beloved wineries along Cayuga Lake. Socialize with old friends at our class receptions and savor dinners by Cornell Catering. Family-friendly events, such as “Fun in the Sun,” are abundant, ensuring there’s something for everyone, whether you’re bringing the kids or attending solo.

Desiree Nattell writes, “I was named first on the 2023 Social Intelligence Insider 50 list. It’s an international who’s who in social media listening/insights/analytics and I was thrilled to be included!” Desiree is a senior analyst, strategy and insights, for Universal Parks & Resorts. “I studied sociocultural anthropology as an undergrad: how people and cultures grow and develop. Anyone in social intelligence can tell you that’s what we’re watching every day; social media just allows growth and development faster than we would have thought possible 20 years ago. My studies didn’t teach me what to think, but how .”

Matthew Gizzo shares, “I was just promoted to shareholder at Ogletree Deakins Nash Smoak & Stewart PC, a labor and employment law firm with more than 55 offices internationally and nearly 1,000 attorneys. I work out of the New York City and Dallas, TX, offices. In September 2023, my wife, Alycia, and I welcomed our first child, Brayden Paul.”

I was named first on the 2023 Social Intelligence Insider 50 list. Desiree Nattell ’09

Political consultant Iris Delgado writes, “I was just appointed to serve as a trustee to Middlesex College by the County Board of County Commissioners.” Iris fondly recalls the “Valentine’s Snowmageddon in 2007” on the Hill.

In 2024, Eva Kestner ’s original music was used by Cambridge International Curriculum in over 160 countries and 10,000 schools—and she was in the cover image of Harper Collins Publisher’s music textbook. From the blurb on her website : “Born in Tokyo, Japan, Eva was raised by a family of scholars and artists with mixed German and Japanese heritage. From a young age she learned how to play piano after her father introduced her to classical music, while she simultaneously learned Taiko (a broad range of Japanese percussion instruments) after her mother introduced her to the Japanese arts. After graduating from the International School of the Sacred Heart in Tokyo, Japan, she attended Cornell, where she earned a BA in philosophy. While there, she joined the Cornell Percussion Ensemble. The following year, she co-founded the Taiko drumming student organization called Yamatai Taiko and she was the lead drummer and musical director. After graduating, she returned to Japan and started performing professionally. She started her solo career a year later.

“Today, she brings Japanese Taiko drumming and song to a brand new context of pop music and also performs with many distinguished artists, musicians, dancers, and Taiko drummers across multiple genres. Eva does not only perform using Taiko—she also uses a number of other instruments that have a distinct flavor of the Japanese environment including koto (Japanese harp), voice, and piano. Eva also works in the field of education and teaches Taiko drumming workshops to both children and adults, and is also involved in humanitarian efforts such as raising awareness for the disabled.” ❖ Jason Georges ( email Jason ) | Alumni Directory .

Hi, Class of 2010! We have a couple of updates to share.

Ingrid Su has started a new multi-language greeting card business, YS Notes . She shares that the idea was first spawned 13 years ago when she sent herself an email to her Cornell inbox with website links on how to enter the greeting industry. Though it’s coming up on our 15th Reunion, it’s never too late to make a dream a reality!

James Hunsberger has been promoted to partner of Axinn, Veltrop & Harkrider, effective the first of this year. He is based in Washington, DC, and focuses on antitrust matters. He has had extensive experience representing U.S. and foreign companies across various industries in high-stakes antitrust matters.

Congratulations to both of our classmates! Share your news at the link below. ❖ Michelle Sun ( email Michelle ) | Alumni Directory .

“I just won a Primetime Emmy for my work on FX/Hulu’s ‘Welcome to Wrexham,’” writes Miloš Balać ! “Having spent three years of my life working on the project in Wrexham, Wales, as the co-executive producer, it has been incredibly fun and satisfying to be recognized with the award for Best Unstructured Reality Program.”

“I first went to Wrexham in October 2020 as the supervising producer on season one, and officially wrapped on the project after three years in July 2023—I was promoted to co-executive producer for season two. As the main point of contact with the world of Wrexham, I cast and fostered relationships with the series’ primary subjects, including members of the Wrexham soccer team, the wider Wrexham community, and team owners Ryan Reynolds and Rob McElhenney. I developed season-long story arcs on the ground, produced and directed the majority of field shoots, wrote and conducted interviews, operated B cam, and set the series look in collaboration with the showrunner and director of photography. In post-production, I produced and oversaw story edits across multiple episodes and reviewed cuts for both seasons of the series.

“Living in Wrexham for the majority of the past three years was truly an incredible and fulfilling experience—Wrexham will be part of my life forever. However, after so long away from home, I decided to amicably step away from the project and return to New York in summer 2023. I’m currently working on a new project that has not yet been announced, so I unfortunately can’t say more!” ❖ Class of 2011 ( email c/o Alexandra Bond ’12 ) | Alumni Directory .

Colleen Brill and Jake Rosen welcomed their son, Leo Michael, on December 16 at 5:22 a.m. Congratulations to you both, and welcome, baby Leo! ❖ Peggy Ramin ( email Peggy ) | Alumni Directory .

Andrew Boryga has released his debut novel, Victim , which, according to the publisher, is “about a hustler from the Bronx who sees through the veneer of diversity initiatives and decides to cash in on the odd currency of identity. This propulsive satire asks what real diversity looks like—and how far one man is willing to go to make his story exceptional.”

Erica Barnell writes, “I hold an MD/PhD from Washington University, and during my medical training I founded a healthcare company called Geneoscopy. Our company has recently successfully concluded an extensive prospective clinical trial involving 8,920 patients to evaluate the effectiveness of our leading diagnostic tool, ColoSense, in detecting colorectal cancer and advanced adenomas in average-risk individuals over the age of 45. In January 2023, we submitted these crucial findings to the FDA as part of our pre-market approval process. I am delighted to share that we have since completed all our FDA audits, including our 100-day meeting with the FDA. Furthermore, we’re thrilled to announce that our research and the associated data have been accepted for publication in the Journal of the American Medical Association .”

JC Tretter was recently inducted into the Cornell Athletics Hall of Fame! Though his time as an athlete on the Hill was spent mostly as a backup tight end on the football team, JC went on to have a 9-year career as an NFL offensive lineman, playing for the Green Bay Packers and the Cleveland Browns. You can read more about him in this recent story . ❖ Rachael Schuman ( email Rachael ) | Alumni Directory .

Hello, Class of 2014! Two of our classmates, Dana Lerner and Katia Lin , were recently honored with the Robert S. Harrison ’76 Recent Alumni Volunteer Award. Dana has served as a Class of 2014 Annual Fund representative and Reunion campaign co-chair since graduation and has also volunteered as part of the Cornell Alumni Advisory Board and the Cornell University Council. Katia has volunteered as part of the Cornell Alumni Admissions Ambassador Network since graduation and served as the VP of social programming for the Cornell Club UK since 2019. Congratulations, Dana and Katia!

With our 10th Reunion coming up in a few short weeks, I would love to hear about your Reunion experiences or any exciting life updates from the last five years to include in a future column. Please send me your stories! ❖ Samantha Lapehn Young ( email Samantha ) | Alumni Directory .

We have a lot of people starting new jobs—even careers—in this issue of Class Notes! We are so proud of our classmates for all their accomplishments.

Kwabena Nimo started Intelligenia, which he describes as a company that “focuses on creating sustainable, synergistic management solutions aimed at leveraging state-of-the-art business methodologies that interface AI and machine learning with consumer-driven data. At Intelligenia, we provide robust industrial and manufacturing techniques to keep pace with the ever-changing economic landscape, while focusing on delivering clinically proven products and results derived from Six Sigma best practices.”

Alana Harris left the world of law to become a teacher. You can learn more about her experience in this 2020 profile posted by the College of Human Ecology.

Carolyn Creneti got a new job as the neuromuscular lab lead at Children’s Wisconsin, and Elisa Raffa has started at CNN as a weather anchor and as a correspondent on all domestic and international platforms. Congratulations, everyone!

Do you have a new job, too? Some other milestone hit? Any other news you’d like to share? Email your class correspondents. ❖ Caroline Flax ( email Caroline ) | Mateo Acebedo ( email Mateo ) | Alumni Directory .

Misha Inniss-Thompson and her mom, Michelle Brown-Grant ’88 , were recently featured in a Cornellians story about their shared vocation: helping kids succeed, with a focus on the needs of Black girls and their communities.

Both mother and daughter majored in human development and minored in Africana studies on the Hill, and both pursued careers that have delved into education, childhood and adolescent development, and the building and sustaining of Black community. “Our work feeds off each other,” Misha observed. “In so many ways, the educator that I am today is largely informed by the ways that my mom interacts with her students, the ways that she prominently displays positive representations of Black people and folks of color more broadly.”

Siddhant Gokhale recently co-wrote a book, Scaling Up Development Impact . “While solutions to tackle some big development challenges (e.g., access to electricity, health, and literacy) already exist, few attain a scale that matches the magnitude of the problem, even though this is critical in meeting the U.N. Sustainable Development Goals by 2030. This book offers concepts, questions, and tools to accompany the scaling process. Weaving together real organizational experiences, the book offers a unique perspective on development—one that puts people experiencing the problem at the center of co-creating solutions, one that emphasizes adaption and frequent iterative experimentation, and one that looks at scaling from the purview of navigating complex systems.” ❖ Class of 2016 ( email c/o Alexandra Bond ’12 ) | Alumni Directory .

We don’t have any news to share from these classes this round. We hope you took the time to fill out and return the Share Your News form that was recently mailed to you! If you haven’t yet, it’s not too late! Please do send us your news—via the hard-copy form or the online news form —so our future class columns can be full of news from all of you. Whether your news is ordinary or extraordinary, we want to hear it! ❖ Classes of 2017 & 2018 ( email c/o Alexandra Bond ’12 ) | Alumni Directory .

There’s still time for you to make plans to join us on the Hill for our 5th Reunion, June 6–9! We can’t wait to celebrate with you! The entire university opens its doors and rolls out the Big Red carpet with dozens of activities, lectures, tours, and meals. If you sign up by May 15, you can lock in the early bird rate.

Registration includes continental breakfast every day, our class dinner on Saturday night, late-night and daytime food, unlimited alcoholic and non-alcoholic beverages, a souvenir, and numerous 2019-exclusive and university-wide events.

Clara Dickson Hall will be our home base for the weekend. Breakfasts, late-night gatherings, and other activities will take place in and around Dickson. Saturday’s class dinner will be held under a tent on the new Ruth Bader Ginsburg Hall plaza on North Campus. Housing is available to everyone who would like to stay on campus, as the dorms are transformed into hotels for the weekend. We’ll have rooms in Dickson (mostly singles) and Jameson Hall (mostly suite-style). You may request housing in quieter dorms, share a room with a friend or significant other, or reserve blocks of rooms near friends.

Class-specific events include: a Dairy Bar ice cream social, a wine tour, a lawn game tournament, and a tour of what’s new on campus. And, of course, the Olin Lecture (featuring Andrew Ross Sorkin ’99 , award-winning journalist and author), a Chorus and Glee Club concert, the Reunion 5K through the Botanic Gardens, Redstock (where Cornell musicians and bands unite for an epic alumni concert), Cornelliana Night, tent parties, and more can be enjoyed throughout the weekend.

To keep up to date with class-specific details, follow us on Instagram ( @cornell2019reunion ). We’re so excited to CU in June! ❖ Class of 2019 ( email c/o Alexandra Bond ’12 ) | Alumni Directory .

“I recently joined a cohort of hundreds of other artists whose artwork landed on the moon as part of the first official art collection there,” writes Sam Price . “This payload, aboard a nickel disk designed to last for a billion years, was part of the first landing from the U.S. in over half a century and the first landing ever by a private company. My artwork is part of a digital series raising money for wildlife conservation in Africa. You can read more here !”

Elisabeth Crotty was recently selected as a 2024 Design and Technology Fellow of Fellowships at Auschwitz for the Study of Professional Ethics (FASPE). “Now in its 14th year of operation, FASPE annually grants 80–90 fellowships to graduate students and early-career professionals in the fields of business, design and technology, journalism, law, medicine, and seminary. Fellows participate in a two-week program in Germany and Poland, which uses the conduct of professionals in Nazi-occupied Europe as an initial framework for approaching ethical responsibility in the professions today. The FASPE curriculum takes advantage of the power of place with daily seminars and dialogue at sites of historic importance, often specific to their profession. By educating students about the causes of the Holocaust and the power of their chosen professions, FASPE seeks to instill a sense of professional responsibility for the ethical and moral choices that the fellows will make in their careers and in their professional relationships.”

I recently joined a cohort of hundreds of other artists whose artwork landed on the moon. Sam Price ’20

Elisabeth is a security technical program manager at Microsoft, working to protect the world with rapid and thorough response to security vulnerabilities. She studied information science, systems, and technology at Cornell, where she developed a passion for building technology in a way that is not only responsible but creates positive social impact. She says, “I was drawn to the FASPE program because I would love to be surrounded by others in design and technology who share a passion for understanding how the products we’re creating, and the way in which we create them, may impact our users and non-users alike. I want to be a part of this program to have a dedicated space to focus on ethical issues and develop strategies to initiate and approach these conversations across disciplines. I think this program will better prepare me to be a leader in this industry that is constantly changing and doesn’t always create space to reflect.” ❖ Class of 2020 ( email c/o Alexandra Bond ’12 ) | Alumni Directory .

Brian Forness is a global banking and markets analyst at Goldman Sachs, where he recently teamed up with a group of fellow analysts, including Valentina Xu ’22 , to take part in the global Goldman Sachs Gives 2023 Analyst Impact Fund Award competition. Teams who enter must identify, study, and ultimately pitch the work of a chosen nonprofit organization to Goldman Sachs leadership; the grand prize is $250,000 donated to that organization.

Though more than 300 teams entered this year, Brian’s team made it to the final round and earned both second place and the “Fan Favorite” prize, which in total secured a grant of $125,000 for their chosen nonprofit, Trickle Up—which seeks to partner with women in extreme poverty and provide them with financial support, training, and mentoring to ensure they build sustainable livelihoods for themselves.

Brian’s volunteerism included co-founding and serving as president of Cayuga Capital, a Cornell student-run educational nonprofit focused on personal finance, taxes, and investing, and serving on the e-board for Cayuga’s Watchers, among many other activities related to his passion for finance and entrepreneurship.

Amanda Hernandez is the volunteer coach for the Cornell University Dance Team. The team placed eighth in the Universal Dance Association’s National College Dance Team National Championship in Orlando, FL—the most competitive collegiate dance competition in the U.S. Amanda writes, “We were one of 11 teams who advanced to the finals, and this was an astonishing achievement, given that our team has only attended the championship twice before and we were founded in 2017.” ❖ Class of 2021 ( email c/o Alexandra Bond ’12 ) | Alumni Directory .

Andrew Lorenzen is among the 51 new Marshall Scholars announced today by the Marshall Aid Commemoration Commission. Andrew majored in government and performing and media arts and minored in English. A published author, he is currently completing a master’s degree in creative writing at NYU. With the scholarship, Andrew will pursue a master’s in politics and communication at the London School of Economics, followed by a master’s in narrative futures at the University of Edinburgh.

In December 2023, our very own Emma Cameron , BS ’21, fulfilled a lifelong dream by winning the title of Miss Rodeo America! She’ll be spending 2024 representing the Professional Rodeo Cowboys Association, logging some 50,000 miles as she travels to a variety of events and appearances around the country—including performing at nearly 100 rodeos. You can read more about her in this recent Cornellians story .

Emma Cameron ’22 , BS ’21, fulfilled a lifelong dream by winning the title of Miss Rodeo America!

As Emma explains in the story, rodeo pageants resemble conventional ones, like Miss America, in a number of ways. For example, contestants have to demonstrate poise and stage presence, excel in interviews, perform in group numbers, and model stylish outfits. (Hers included a striking copper-colored metallic dress—which she helped design—for the competition’s “Western trendy” fashion show.)

“The big difference for us is that instead of singing or dancing, our talent is horsemanship,” she says. “We have a whole day dedicated to evaluating how well we can ride a horse, and we have interviews and a written test on equine science, veterinary knowledge, and the overall industry, to make sure we can represent it well.”

At the Miss Rodeo America competition—which has been held since 1956—Emma beat out 30 other young women for the crown and won several awards, including the one for horsemanship. Her prizes include scholarships as well as a large wardrobe of Western-style clothing, jewelry, and accessories, which she sports at her many appearances. The highlight, of course, is the elegant Miss Rodeo America crown. No ordinary tiara, it’s specially designed to slip onto the variously colored cowboy hats that coordinate with her outfits. ❖ Class of 2022 ( email c/o Alexandra Bond ’12 ) | Alumni Directory .

Lorlei Boyd develops AI tools for Gray Decision Intelligence , a software company that provides platform evaluation software to colleges and universities. She first started at Gray DI as an analyst but quickly transitioned into a developer (she led the integration of generative AI into Gray’s interface). While grounded in critical thinking, she draws from her humanities background at Cornell to approach her work in shaping technology with a human element. ❖ Class of 2023 ( email c/o Alexandra Bond ’12 ) | Alumni Directory .

Agriculture and Life Sciences

Samson Hagos , MS ’04 , PhD ’07 , is an earth scientist at Pacific Northwest National Laboratory in southeast Washington State, where he models the lifecycles and variability of precipitation and extreme weather events across various regional and global scales. During his time on the Hill, Samson studied the causes of the decade of catastrophic droughts across the Sahel region in Africa. He co-authored a breakthrough paper about these causes and Sahel’s rebound to normal precipitation levels with his advisor and mentor at Cornell, climate scientist Kerry Cook. Samson grew up in drought-stricken East Africa in the 1980s. Despite this and the often-scarce availability of water throughout the world, Samson is optimistic: “We need to work together, wherever we happen to be geographically. We need to look out for the less fortunate. Collectively, we have the tools to solve our water problems. Humankind is a very resourceful and cooperative species.”

Architecture, Art, and Planning

Christine Song , MArch ’09 , is a senior associate at the architecture firm Elkus Manfredi in Boston. Christine currently has a leading role in major projects in Boston and Cambridge, including the redevelopment of the National Transportation Center facility in Kendall Square. In 2023 she was named to NEREJ ’s Rising Star List for her complex designs on high-rise buildings and her influence on the cityscapes of Boston and Cambridge.

Arts and Sciences

Photographer Julia Cumes , MFA ’98 , has been named the Arts Foundation of Cape Cod’s 2024 Artist of the Year. The award recognizes a Cape-based artist whose work shapes thought, inspires change, and creates a deeper sense of connection in the community. Her photography has taken her to India, Rwanda, Thailand, Lebanon, Tanzania, Cuba, Kenya, and more. She has photographed the aftermath of several of the world’s recent natural disasters, including Hurricane Katrina in 2005, the 2004 earthquake and tsunami in the Indian Ocean, and the floods in Eastern Kentucky in 2022. Last year she launched Photo Artfolio , an online organization that serves as a resource center and gallery to support emerging and established photographers. “As a young photographer, I experienced firsthand the profound impact of having mentors in my photographic journey,” Julia says. “Their guidance, support, and insights were instrumental in shaping my skills and artistic vision. It is with this understanding of the value of mentorship and a strong photography community that the idea of Photo Artfolio was born.”

Nick Roth , MA ’11 , PhD ’14 , has a new project—a movie titled Hanky Panky that is written, co-directed, and co-starred in by Nick himself. The movie is about a man and his talking napkin best friend who must save the world from a killer, evil top hat in a cabin deep in the Utah mountains—all while also learning to love. It came out on April 19 and is available on Amazon, Apple, Google, and more.

Amarildo Gjondrekaj , MBA ’19 , is founder and CEO of Adro, a financial technology company that provides financial services for people who are moving to the U.S. from another country for school or work. Adro is launching this summer. Several classmates have joined his team, including Sara Schmitt , MBA ’19 , as COO, and Lalo Gonzalez , MBA ’19 , as a user experience/user interface designer.

Engineering

Eric Betzig , MS ’85 , PhD ’88 , has been announced as a 2024 inductee into the National Inventors Hall of Fame for his co-invention of a super-resolution imaging technology called photoactivated localization microscopy. This allows scientists to distinguish individual molecules and study biological structures and processes with unprecedented resolution. Eric will be inducted on May 9, 2024 in Washington, DC, at the annual ceremony. This honor is also being awarded posthumously to another Cornellian, Alice Stoll , MS ’48 , for her invention of fire-resistant fibers and fabrics.

Alexander Boys , MS ’16 , PhD ’19 , recently started a position as an assistant professor in the Thayer School of Engineering at Dartmouth College. He is researching the development of bioelectronic implants for applications in regenerative medicine and rehabilitation engineering. Alexander previously worked as a postdoctoral fellow at the University of Cambridge for five years.

Industrial and Labor Relations

Cindy Vogel Ryan , MILR ’99 , was recently appointed as MassMutual’s head of human resources, where she’ll oversee the company’s HR organization and advance its people strategy. At MassMutual, a life insurance and financial services company, she will manage a range of areas including talent acquisition, employee relations, and diversity, equity, and inclusion. Cindy has over two decades of HR leadership experience, including 25 years at Cigna, where she most recently served as chief human resources officer.

Veterinary Medicine

Charles Hjerpe , DVM ’58 , lives in Davis, CA, with his wife, Sue Davis Hjerpe ’58 , and enjoys following the trials, tribulations, and triumphs of their three children and six grandchildren who live throughout the country. Their grandson Cooper Austin Hjerpe was drafted with the 22nd pick in the first round of the 2022 MLB Draft by the St. Louis Cardinals and is now with the Peoria Chiefs on injured reserve following elbow surgery. Charles fondly remembers his days at Lambda Chi Alpha and “all the camaraderie that went with fraternity living. Studying with my wife-to-be in the evenings at Tri Delt on Beebe Lake during 1957–58 was also memorable.”

Welcome to our newest offering: Group Notes! Like Class Notes, these columns are written by alumni, but they comprise news about members of Cornell groups—including campus activities, alumni organizations, and more—across generations. If you would like to see your group represented here, email us for more information!

Cornell Daily Sun

Hello fellow Sunnies, and welcome to Group Notes! I’m excited to introduce this new column, which will highlight the achievements and celebrate the lives of Sun alumni. As one of Cornell’s oldest, most storied student organizations, the Cornell Daily Sun boasts a vast and accomplished alumni network. Sunnies make a significant impact in journalism, philanthropy, business, medicine, and many other fields. We create thought and inspire change. I’m proud to introduce you all and share your stories, both personal and professional.

If we haven’t met, I’m Vee Cipperman ’23 . Like many of you, the Sun formed the backbone of my college experience. I served consecutively as news editor, editor-in-chief, and senior editor (the paper’s best position!). Since my graduation in December, I’ve worked as a graduate fellow in Sun operations and alumni outreach. I enjoy cooking, running, and exploring Ithaca’s many natural gems, and I hope to pursue a long career in journalism and communications.

But enough about me. I’ve gathered plenty of exciting news about you and your fellow alumni. In the past few months, you’ve launched exciting projects, embarked on new careers, and expanded your families. 2024 is shaping up to be a busy year for Sun alums!

Following five years at the Wall Street Journal , Haley Velasco ’15 ( Sun editor-in-chief) started working at McClatchy in 2022. As an editor, she leads growth strategies for 30 papers including the Kansas City Star , the Miami Herald , and the Sacramento Bee . Haley writes, “This is also my second semester teaching a ‘Social Media in Journalism and PR’ undergraduate class at Seton Hall University, where I teach audience strategy, social media platforms, and work through brand analysis.”

Sun alumni continue to make waves as professional reporters. Jessica DiNapoli ’08 , BA ’07, (senior editor) writes that she recently returned to work at Reuters, “covering consumer products companies.” Justin Peters ’03 (columnist) will cover the 2024 Summer Olympics for Slate . He also co-owns Tampa-based comedy club the Commodore, “thus bringing me closer to achieving my lifelong dream of becoming ‘Florida Man.’” Carl Leubsdorf ’59 (associate editor) celebrated 44 years as a reporter at the Dallas Morning News and Tribune Content Agency last March. He writes, “My wife, fellow journalist Susan Page, will be releasing a biography on Barbara Walters in the spring.”

Sun alums have also launched exciting projects outside the journalism world. Phil Mazo ’03 (cartoonist) released a short comedy film called “I’m Phil,” which won the 2022 Coney Island Film Festival for Best Comedy Short. Ed Zuckerman ’70 (editor-in-chief) published Wealth Management , a thriller novel, in 2022. He writes, “One character in the book is a Cornell graduate, but she didn’t work on the Sun . Her loss.” This book is yet another twinkle in Ed’s star-studded career as a journalist, nonfiction author, and writer-producer on TV shows including “Law & Order.”

Many Sun alums have found their calling outside the media industry. Zachary Silver ’19 (sports editor) covered Major League Baseball for four years before pivoting to communications. He writes, “I have learned that even if I’m out of the field, it’s easy to stay connected.” He keeps up with the friends that he made in the press box, and he reports that he’s still cheering from the sidelines.

Phil Mazo ’03 won the 2022 Coney Island Film Festival for Best Comedy Short.

Chloe Gatta ’12 (business manager) lives in Manhattan and works in strategic communications at Hiltzik Strategies. Maryam Zafar ’21 (editor-in-chief) pursues research in environmental health epidemiology and writes for the Harvard Public Health Magazine . She reports that she will begin medical school in fall ’24.

Andy Guess ’05 (editor-in-chief) lives in New York City and works as an assistant professor of politics and public affairs at Princeton University. He writes, “Remember, New Jersey and you, perfect together.” Rochelle Li ’21 (HR manager) works in healthcare management for global consulting firm ZS. She writes, “I currently live in New York City and spend my free time engaging in various cozy hobbies, including baking, embroidery, and houseplant growing.”

Several Sun alums stick close to home, pursuing careers here in Ithaca. Amanda Soule Shaw ’00 , MBA ’05 (business manager) serves as the associate dean for administration and finance for the Cornell Jeb E. Brooks School of Public Policy. She writes, “I live in Ithaca with my husband and two teenage sons, who regularly fight over wearing my Cornell Daily Sun sweatshirt to school and around town.” Kirkpatrick Sale ’58 (editor-in-chief) lives in the Ithaca area with his wife. He reads the Sun online each morning.

Other alumni, including Salil Gupte ’01 (managing editor) and Nicole Neroulias Gupte ’01 (features editor) make a big impact abroad. Salil serves as president of Boeing India, “opening a new 43-acre campus with India’s Prime Minister and launching a new training program for women pilots.” Nicole serves on the board of governors of Delhi’s American Embassy School. She is pursuing a master’s degree in library and information science from San Jose State University.

They write, “Our two kids, R.J. and Katia, are also busy with school, Scouting, taekwondo, music programs, and being dragged around the world.” Nicole and Salil invite any Sunnies visiting Delhi (during the school year) or Seattle (over summer breaks) to reach out on LinkedIn.

To close our first Group Notes column, I’ll share some exciting news about Sun families. In 2023, Carl Leubsdorf celebrated the wedding of his son, Will. Jessica DiNapoli and her husband, Sachin Shah, welcomed their son, Michael, in August 2023.

That same month, Haley Velasco got engaged—she reports that she’s currently planning her wedding. Chloe Gatta got engaged in November 2023; she and her fiancé, Aayush Srivastava, plan to get married in Philadelphia.

It’s been great to hear all your fun stories. To my contributors, thank you for your time! If you’re interested in submitting an update for a future Cornellians column or the Sun alumni blog, please reach out to me . It’s always exciting to see where Sunnies end up in the world, and how you’re all working to change it for the better. Shine bright! ❖ Vee Cipperman ’23 ( email Vee ) | Alumni Directory .

University Chorus & Glee Club

Willkommen! Bienvenue! Welcome! To the brand spankin’ new Cornell Chorus and Glee Club (a.k.a. “Glorus,” according to the current students) Group Notes column! I am excited to be your correspondent and to share all of your updates.

A little bit about myself: I, Alison Torrillo French ’95 , graduated from Cornell in 1995, sang Alto 2 (woot!) in the Chorus all four years, and was a part of After Eight. Outside of singing, I majored in communications in CALS, wrote for the arts and entertainment section of the Daily Sun , and was president of Women in Communications. I now am a solopreneur, running my own consulting company, aptly named Alto Solutions ! I live outside Washington, DC—where I recently got to see many of you when the Glorus came down for winter break tour—with my husband (and classmate, but he was a Big Red Band geek), Matt French ’95 , ME ’96, and our two kids, Ray, 13, and Ben, 11 (who both adore visiting Cornell—in particular, the Dairy Bar!). I have sung with several a cappella groups and bands in the area and can often be found belting it out at karaoke night with friends.

Now let’s dive right into your updates, shall we? Also in the Washington, DC, area, where the spirit of Cornell music-making lives on, is Brad Spencer ’79 , who sings in the Washington Men’s Camerata along with fellow Glee Clubbers Robert Harris ’80 , Kenyon Erickson , MPS ’81 , Jason Rylander ’93 , Eugene Stromecki ’82 , Michael Schrier ’90 , and Shea Murphy ’20 —all under the direction of former CUGC director Scott Tucker and the first woman to serve as the Camerata’s associate director, Chorus alum Julie Huang Tucker ’05 . Writes Brad, “We have sung more than a half dozen times with the National Symphony Orchestra and recently made NFL history by singing on a state-of-the-art recording of the Washington Commanders’ new fight song.”

Yet another D.C.-area Glee Clubber who is continuing to sing is Bill Welker ’73 , MBA ’75. He has been a member of the Choral Arts Society, whose season started with the singing of Rachmaninov’s “Symphony of the Bells” (prepared by Scott Tucker) and then William Walton’s “Belshazzar’s Feast,” conducted by Marin Alsop, both performances at the Kennedy Center. Bill is looking forward to singing Carl Orff’s Carmina Burana in the spring.

We recently made NFL history by singing on a state-of-the-art recording of the Washington Commanders’ new fight song. Brad Spencer ’79

Living in Cincinnati, OH, Jessica Graus Woo ’93 —my co-president of the After Eight Alumni Council—writes that she recently got to catch up with Steve Merz ’91 at a grad school event. Steve lives in Maine and is running a behavioral healthcare organization. “It had probably been 25 years since we’d seen each other, but it was like no time had passed,” says Jess. As I write this in February, I am excited myself to catch up with Jess and others at the Cornell Alumni Leadership Conference in Baltimore—I’m sure I’ll have some news to report afterward.

Jeanne Arnold ’78 is also keeping the music alive and is busy doing local theater on the East End of Long Island. She has done The Producers (ensemble), Cry-Baby (stage manager), Taming of The Shrew (Tranio), and Macbeth (Seyton and First Murderer). She is active in Corchaug Repertory Theatre, North Fork Community Theatre, and Northeast Stage. She also recently got together with friends to perform a Broadway tap dance number and has sung lead with some bands. Her favorite Chorus memories are Carnegie Hall with Michael Tilson Thomas in 1977 and our centennial Reunion in 2022.

Finally, TP Enders ’90 , ME ’96, shared an update from Robert Pierce ’61 , who, after having been widowed, reported re-finding joy through singing by joining the Encore East Side NYC Chorale. The group is run by Encore Creativity, a national choral organization for age 55+ adults. He invites NYC-area singing alumni to join him. The group does not hold auditions, rehearses weekly at Madison Avenue Presbyterian Church (E. 73 rd Street), and is in particular need of male voices. There’s more information on Encore’s website and Facebook page .

That’s it for the inaugural column. All of your updates are certainly music to my ears. Please keep them coming. Until we meet again … ❖ Alison Torrillo French ’95 ( email Alison ) | Alumni Directory .

Top image: Photo by Ryan Young / Cornell University

Published May 1, 2024