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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.

Addis, R.W., fl. 1864 [Lieutenant Patrick H. Keenan]

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Gilder Lehrman Collection #: GLC05528.18 Author/Creator: Addis, R.W., fl. 1864 Place Written: Washington, District of Columbia Type: Photograph Date: circa 1864 Pagination: 1 carte de visite : b&w Height: 10.2 cm, Width: 6.4 cm Order a Copy

Vignette bust portrait with beard. Name and rank inscribed on recto beneath photograph.

Addis, Robert W., fl. 1874
Keenan, Patrick H., 1838-1865

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