The Getty Search Gateway - The Getty Search Gateway allows users to search across several of the Getty repositories, including collections databases, library catalogs, collection inventories, and archival finding aids. The images in Getty's Open Content Program are available to the public for use without fees or restrictions.
Google Cultural Institute - Explore museums from around the world, discover and view hundreds of artworks at incredible zoom levels, and even create and share your own collection of masterpieces
Free Art eBooks - Free eBooks from the Metropolitan Museum of Art.