Scanners: At the center of this 1974 photograph is the late Riccardo Levi-Setti, professor emeritus of physics (see Deaths). With physicists Timothy Fox, SM’71, PhD’80 (left), and William Escovitz, SM’73, PhD’79, Levi-Setti developed the scanning transmission ion microscope, shown here, and published research on its design and uses, which included imaging genetic material such as chromosomes. (Photography by Jac Stafford, UChicago Photographic Archive, apf1-03855, University of Chicago Library)

A snowdrift runs through it: The main quadrangle in 1933, snapped by English professor Norman Maclean, PhD’40, author of A River Runs through It, and Other Stories (University of Chicago Press, 1976). (Photography by Norman Maclean, PhD’40, UChicago Photographic Archive, apf2-02802, University of Chicago Library)

Add a little something sweet: When blues singer Koko Taylor performed at a 1985 winter concert in Mandel Hall, Taylor’s grandson, whom she affectionately called the Candy Man, joined the band alongside guitarists Albert Collins and Lonnie Brooks. (Photography by James Ralston, EX’87. Copyright 2018, The Chicago Maroon. All rights reserved, reprinted with permission.)

Reader reactions: Laura Fermi (left), author of the biography Mussolini (University of Chicago Press, 1961), marks the occasion of the book’s publication with Muriel Beadle, who later cowrote The Language of Life: An Introduction to the Science of Genetics (Doubleday, 1966) with her husband, University president George W. Beadle. For more about Fermi and another of her books, see “101 Citations.” (UChicago Photographic Archive, apf1-09738, University of Chicago Library)

Breakthrough: In 1972, six years after he won a Nobel Prize in Medicine for his work on the hormonal treatment of prostate cancer, Charles B. Huggins (right) worked with postdoc A. Hari Reddi at the Ben May Laboratory for Cancer Research on experiments related to tissue differentiation. Reddi is now director of the UC Davis Center for Tissue Regeneration and Repair. (UChicago Photographic Archive, apf1-02911, University of Chicago Library)

How are you this morning? Frances R. Horwich, PhB’29 (center), was known as Miss Frances on Ding Dong School, the children’s television show she hosted in the 1950s and ’60s. A nursery school supervisor and elementary school teacher and later a professor of education, Horwich designed the show as a participatory experience for preschoolers, encouraging them to interact with the program and using the camera to simulate their vantage point. (Photography by Fred Schnell, UChicago Photographic Archive, apf1-02867, University of Chicago Library)