America's Historical Documents: National Archives
A database of America's most important and interesting historical documents, from the most recognized to the most surprising.
Library of Congress: Digital Collections
A national archive project that collects all sorts of historical materials including digital reproductions of photographs, maps, prints, etc.
National Park Services: Harpers Ferry Center
Includes an historic photo collection of more than two million images of national park architecture, Civilian Conservation Corps, Native American heritage, and more.
New York Public Library Digital Gallery
An image database taken directly from primary sources at the New York Public Library. Browse by general topic area or search by keyword.
Russian Posters Collection; 1919-1989
Consists of 75 Russian posters, documenting almost 60 years of Communist political advertising (1920s-1980s).