American Memory from the Library of Congress provides free and open access to written and spoken words, sound recordings, still and moving images, prints, maps, and sheet music that document the American experience.
Library of Congress Flickr Photostream
Library of Congress Prints and Photographs Online Catalog include photographs, fine and popular prints and drawings, posters, and architectural and engineering drawings. While international in scope, the collections are particularly rich in materials produced in, or documenting the history of, the United States and the lives, interests and achievements of the American people.
LIFE photo archive contains photographs from the LIFE photo archive, stretching from the 1750s to today. Most were never published and are now available for the first time through the joint work of LIFE and Google.
National Archives and Records Administration (NARA) Online Exhibits
