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Guide to the Dearborn Observatory Records, 1863-1967

Records of Dearborn Observatory, built in 1865 by the Chicago Astronomical Society and the University of Chicago and in 1889 moved to Northwestern University's Evanston campus. Dearborn Observatory was a significant contributor in the area of double star research. The records consist almost entir...

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Sigmund J. Osty visual materials, 1960-1976

Black-and-white photographic prints depicting the built environment, predominantly in Chicago, but also Evanston, Skokie, and Galena, Illinois. All the images depict exterior views, the majority of which are street intersections, though the collection also documents streetscapes, residen...

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