One of the best places to start research is in the online Library Catalog . New York, Grove's Dictionaries, 1996.
Many articles have brief bibliographies appended.
The Dictionary of Art is also available online from any Amherst computer. Encyclopedia of World Art . Encyclopedia of Comparative Iconography . An alphabetically-arranged set of essays on major themes in art throughout the ages, with lists of selected artworks which utilize each theme, and good bibliographies. An Encyclopedia .