Using & Citing Images (a resource guide)
Guide to Finding Public Domain Works Online (The Public Domain Review)
Over two million high-quality images in the arts, architecture, humanities, and social sciences. NOTE: Artstor is now in JSTOR
Over two million digital images of art, history, and culture from global museums, galleries, private collections and contemporary artists all copyright cleared for educational use.
Not all images in these collections are in the public domain.
Check licenses!
Open images and video from the Netherlands Institute for Sound and Vision. Check out the cat videos! Including cats playing chess and cat in a basket...
Art, artifacts, books, films and music from European museums, galleries, libraries and archives. See Free to Use Images.
The Public Domain Project from POND5 features thousands of historic media files available including film, images, audio and 3D models.