Search on the ARTstor website to find publication-quality images for use in scholarly publications free of charge. Instruction for how to search for and download the IAP images can be found here. Participating institutions include The Metropolitan Museum of Art, Princeton University Art Gallery, Yale University Art Gallery, Dallas Museum of Art, and the Indianapolis Museum of Art, among others.
Various cultural institutions have contributed content to the Flickr online photo management system. Contributors include: The Library of Congress; The Smithsonian; George Eastman House; Brooklyn Museum; Getty Research Institute; New York Public Library, and dozens more. Images in Flickr Commons have "no known copyright restrictions".
The open content images from the J. Paul Getty Museum and the Getty Research Institute's collections are of works of art believed to be in the public domain and are available for free and without restriction.
Photo agency of the French Ministry of Culture. Includes nearly 800,000 photographs of artwork housed in France’s national and regional museums, including the Louvre, the Musée d’Orsay, the Centre Pompidou, Chantilly’s Condé Museum and Palais de Beaux Arts of Lille.