Aaron Douglas: African American Modernist.
American Memory Project from Library of Congress: List of all collections in project.
American Treasures of the Library of Congress. Permanent online exhibition.
Archive of Early American Images (JCB). Brown users: also see Luna Insight. (login required for off-campus access)
Arts of the United States. Photography of the art was executed in the mid 20th century.
Bound for Glory: America in Color, 1939-1943. Library of Congress online exhibition of color photographs taken for the Farm Security Administration / Office of War Administration.
Calisphere: Images relating to California from California institutions.
History, Art and Archives: Collections of the US House of Representatives.
Mammoth Plate Photographs of the North American West, Beinecke Rare Book & Manuscript Library, Yale University.
New Eyes on American Art. Images from the Walters Art Museum. Freely available with no restrictions.
Public Art Archive. A project of the Western States Arts Federation. Searchable database of public art in the United States.
Special Collections Resource Center at Syracuse University: Painters and Sculptors. Includes papers of Anna Hyatt Huntington, Jacob Lawrence, Grace Hartigan, Arbit Blatas, James M. Albright (relating to N. C. Wyeth), Boris Artzybasheff, Pierre Bourdelle, Philip Reisman, Anita Weschler, Frederic and Eileen Monaghan Whitaker, Letters of John Singer Sargent, Artist Interviews by Colette Roberts, and more.