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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.

Brady, Mathew B., 1823-1896 As major, seated facing right

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Gilder Lehrman Collection #: GLC05111.02.0286 Author/Creator: Brady, Mathew B., 1823-1896 Place Written: Washington, District of Columbia Type: Photograph Date: 1863/04 Pagination: 1 carte de visite Height: 9.9 cm, Width: 6.2 cm Order a Copy

Ink inscription on recto "A.S. Cassidy Major 93rd N.Y." Imprint on recto "Brady New York." Ink inscription on verso "Ambrose S. Cassidy. Major of 3rd N.Y. Vol. Inf. Bv't Brig. Gen. U.S.A. Mch. 13. '65" "(1708)" "April 1863." Photographers imprint on verso: "Brady's National Photographic Portrait Galleries, Broadway & Tenth Street, & No 352 Pennsylvania Av. Washington D.C."

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