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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.

Diamond, Sidney, 1922-1945 to Estelle Spero

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Gilder Lehrman Collection #: GLC09120.128 Author/Creator: Diamond, Sidney, 1922-1945 Place Written: Edgewood Arsenal, Maryland Type: Autograph letter signed Date: 1942 Pagination: 4 p. ; 20 x 27 cm. Order a Copy

Letter written during a study period, in which Diamond writes that they have just completed reviewing an entire year of chemistry in the space of four hours. Sidney has somewhat of a political disagreement with Estelle.

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