Created by the Metropolitan Museum of Art in New York, the Heilbrunn Timeline of Art History is an online database of essays, maps, and interactive timelines pertaining to the museum's collection.
Access Guggenheim publications about significant artists written by significant scholars and critics. Includes many rare and out-of-print exhibition catalogs.
The National Museum of the American Indian is part of the Smithsonian Institute. It features permanent collections as well as rotating exhibitions of both historical artifacts and contemporary art and cultural expressions.
Provides access to images submitted by many Flickr users under Creative Commons licenses. You can browse or search through content under each type of license.