Our Collection

At the Institute’s core is the Gilder Lehrman Collection, one of the great archives in American history. More than 85,000 items cover five hundred years of American history, from Columbus’s 1493 letter describing the New World through the end of the twentieth century.

Unknown [Photograph of scientists involved with the Manhattan Project]

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Gilder Lehrman Collection #: GLC03152.09 Author/Creator: Unknown Place Written: s.l. Type: Photograph Date: circa 1945 Pagination: 1 photograph : b&w ; 18.1 x 22.7 cm. Order a Copy

Depicts Drs. Irving Kaplan, Francis Bonner, Ernest O. Lawrence, and [Robert] Harrison together looking at an open volume on the table before them.

Kaplan and Bonner worked in the Columbia University S.A.M. (Substitute or Special Alloy Materials) Laboratories in New York City. Lawrence and Harrison worked at the Oak Ridge, Tennessee Manhattan Project site.

Dunning, John Ray, 1907-
Goldberg, Mildred, 1923-2008

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