Objective:
To find a decent sized collection of stock photos that are in the public domain or have expired copyrights.
Results:
EveryStockPhoto Search Engine – Nice interface, giant collection of public domain stock photos
Public Domain Photos .com – well organized collection of public domain photos.
Wikipedia Public Domain Photos – contains a wide collection of public domain photos.
National Fish & Wildlife Service – contains lots of nature photos
HubbleSite – space photos from NASA
Gimp-Savvy – aggregation of photos from many government public domain photos
