Our Collection

At the Institute’s core is the Gilder Lehrman Collection, one of the great archives in American history. More than 70,000 items cover five hundred years of American history, from Columbus’s 1493 letter describing the New World to soldiers’ letters from World War II and Vietnam. Explore primary sources, visit exhibitions in person or online, or bring your class on a field trip.

Patterson, Robert M. Collection of 27 manuscripts and 2 broadsides re: defense of Philadelphia [Decimalized .01- .27]

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Gilder Lehrman Collection #: GLC02978 Author/Creator: Patterson, Robert M. Place Written: [various] Type: Header Record Date: 1813-1814 Pagination: 25 M + 2 Br

Printed and manuscript materials relating to the construction of earthen defenses around Philadelphia. Most date from 8/30/1814 - 10/31/1814.

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