Have you used Oxford Art Online yet? Check it out! Oxford Art Online is a fantastic reference source that combines four Oxford University Press titles — Dictionary of Art (a 34-volume encyclopedia, called Grove Art Online in the online version), Encyclopedia of Aesthetics (4 volumes), Oxford Companion to Western Art, and Concise Oxford Dictionary of Art Terms — into one electronic source. It’s a great place to start research for artists or any art-related topic. Oxford Art Online includes clickable images and links to ARTstor, plus links to museums that hold particular works or examples of a style of work. You can e-mail your search results to any e-mail address, and there’s even a button that will show you how to properly cite your item. Here’s an example article on Surrealism from Grove Art Online. Note all the cross-references that are linked. (If you just need a quick definition, take a look at Surrealism in the Concise Oxford Dictionary of Art Terms.)
There are lots of other features: from the Oxford Art Online home page, click on Tools and Resources, then Grove Art to see Thematic Guides, Timelines of World Art, and MoMA/Grove Art Resources for Educators. Fabulous! And if you like the image of the diagram of the zodiac above, check out the article, “Diagrams in Medieval Art”, for more info.