The Gilder Lehrman Collection, on deposit at the New-York Historical Society, contains more than 80,000 documents detailing the political and social history of the United States. The collection's holdings include manuscript letters, diaries, maps, photographs, printed books and pamphlets ranging from 1493 through modern times. The searchable database of rare and important American historical documents contains nearly 400 annotated transcripts from the Collection. Authors include Geroge Washington, John Quincy Adams, Harriet Beecher Stowe, Frederick Douglass, and Abraham Lincoln. The documents span the years from Columbus's arrival to the end of the Civil War and represent topics as varied as colonial frontier life, the Boston Massacre, the "Amistad" affair, and the role of African American troops in the Civil War.