Grove Art Online
Full-text of the Dictionary of Art (45,000 articles), ed. Jane Turner (1996, 34 vols.) and The Oxford Companion to Western Art, ed. Hugh Brigstocke (2001) with 100,000 linked images from the Bridgeman Art Library.
ARTstor is a repository of hundreds of thousands of digital images and related data. The images are drawn from different sources, such as museums, archaeological teams, photo archives, slide collections, and art reference publishers. ARTstor was launched by The Andrew W. Mellon Foundation to provide helpful and coherent collections of images and data to educational and scholarly users.