Digital Collections
Search 15,861 of our digitized items: artifacts, photographs, advertisements, letters, rare books, oral histories, and more.
Recently Added
Letter of condolence to F. Otto Haas, May 20, 1967
Letter from Phoebe Waterman Haas to John and Chara Haas, September 30, 1952
History of the Rittenhouse Astronomical Society 1888-1960
Letter from Phoebe Waterman Haas to John and Chara Haas, April 8, 1953
Letter from Phoebe Waterman Haas to John C. Haas, May 1, 1951
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Collections
Digitized materials are selected from four collecting areas at the Science History Institute.
