(New York, NY – September 17, 2013) The Gilder Lehrman Institute of American History announced today the signing of an agreement with Adam Matthew to digitize and publish the Gilder Lehrman Collection (GLC), one of the most important archives on American history in existence.

Spanning from 1493 until the twentieth century, and particularly strong on the Revolutionary War and Civil War periods, the GLC includes letters, diaries, maps, pamphlets, printed books, newspapers, photographs, and ephemera. The political, social, and economic history of the United States is documented in this remarkable collection.

Under this new agreement Adam Matthew will digitize c.50,000 items, the vast majority of the archive....