Oxford Art Online from Oxford Press by OxfordAccess limited to 1 user at a time.
Provides access to The Dictionary of Art, with over 45,000 signed articles and images on every aspect of the visual arts. Content updated 3x/year. Includes several other art reference works.
Sources: The Dictionary of Art, ed. Jane Turner (print edition: 1996, 34 vols.); The Oxford Companion to Western Art, ed. Hugh Brigstocke (2001); The Encyclopedia of Aesthetics; and The Concise Oxford Dictionary of Art Terms.