U.S. National Archives puts 3,000 images on Flickr Commons
The United States National Archives and Records Administration has uploaded 3,000 images to The Commons, "the world’s public photography archives on Flickr." The images are grouped into four collections:
Mathew Brady Civil War Photographs
DOCUMERICA Project by the Environmental Protection Agency - scenes of everyday life in the 1970s
Development and Public Works - Montana Flatriver Irrigation Project
Historical Photographs and Documents - Elvis and Nixon, Ansel Adams, Earth seen from space, and much more.