Smithsonian American Art Museum (SIRIS)
This is a three database set comprising of: Art Inventories, Photograph Archives and Pre-1877 Art Exhibition Catalogue Index. Search by keyword or browse by artist, title, subject, object type or owner.
ArtLex: Art Dictionary
The ArtLex site contains definitions pertaining to art and visual culture, supporting images and pronunciation notes.
Timeline of Art History
The Metropolitan Museum of Art's Heilbrunn Timeline of Art History is a chronological, geographical and thematic exploration of the history of art from around the world.