iCONN Free Images on the Web
Compilation of free image sources.
New York Public Library Image Gallery
Provides access to over 600,000 images digitized from primary sources and printed rarities in the collections of The New York Public Library.
Metropolitan Museum of Art’s Collection Database
Searchable database of everything in the Mets’s permanent collection.
Modern Museum of Art’s Browse and Search
Browse or search MOMA’s permanent collection.