ARTstor is a non-profit initiative¸ founded by the Andrew W. Mellon Foundation¸ with a mission to use digital technology to enhance scholarship¸ teaching and learning in the arts and associated fields. It is a searchable database of more than 2.5 million digital images and related data. Combinations of images¸ data and text provides comprehensive art-related teaching¸ learning and researching capabilities. Images can be viewed and analyzed through features such as zooming and panning.
"The Library of Congress has made digitized versions of collection materials available online since 1994, concentrating on its most rare collections and those unavailable anywhere else. The following services are your gateway to a growing treasury of digitized photographs, manuscripts, maps, sound recordings, motion pictures, and books, as well as "born digital" materials such as Web sites."