ARTstor on JSTOR
A digital library of 550,000+ images for art, architecture, the humanities, and social sciences. Includes a set of tools to view, present, and manage images for research and pedagogical purposes. Help guides available.
Visual Resources Library Image Database
Electronic image database maintained by the Visual Resources Library in the Department of Art and Art History at SJSU.
Many museums have searchable databases of their collections. Below are some museums and libraries with rich collections. If you know a museum has holdings of artwork you are researching, find the website and look for the "collections" feature on the website.