ARTstor

Broad collection of more than 1.8 million digital images

Calisphere

Primary sources from the University of California Libraries

CAMIO

Database of images, audio/video, and mixed media arts

Francis

Coverage of thousands of periodicals in humanities and social sciences

Photography: The World through the Lens

Part of Nineteenth Century Collections Online: collections of photographs, albums, photographically illustrated books, and texts on the history of photography

Project MUSE

Resources from university presses and scholarly societies

WorldCat

Advanced search for resources in libraries worldwide