Contains thousands of out-of-copyright historical images, curated by the Public Domain Review (PDR). Includes highlights from galleries, libraries, archives, and museums. Also functions as a database of images featured in the PDR. These featured images each link to an article on the PDR where one can read about the stories which surround the works. Links to the institution where the image was found are also included.
Possible alternative to AP Images (cancelled as of 2025).