www.aaa.si.edu
This archives collection of the Smithsonian contains letters, photographs, diaries, sketches, scrapbooks, business records, and other documents that support the history of the visual arts in America. Some of these sources can be downloaded from this web site. Specific categories of the site are organized as follows: collections A-Z, oral history interviews, funding aids, collection online, special focus guides, digital collections, search images, search catalogs, recent acquisitions, and exhibits.