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.

Keystone View Company Trench Mortar in Its Well-timbered Chamber--View Looking Straight Down.

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Gilder Lehrman Collection #: GLC09584.138 Author/Creator: Keystone View Company Place Written: s.l. Type: Stereocard Date: 1914-1918 Pagination: 1 stereocard ; 8.7 x 17.7 cm. Order a Copy

A mortar sits inside a pit, whose walls are lined with lumber supports, several miles behind the front lines, used to destroy enemy trenches from afar.

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