From the New York Times:
"As part of an effort to expand access to its photograph collections and tap the collective knowledge of user-generated content, the Library of Congress Wednesday launched a pilot project with photo-sharing site Flickr to publish some 3,000 photos. The library's new Flickr page includes collections from the Great Depression and of life in New York City during the early 1900s for which no copyright restrictions are known to exist, said Matt Raymond, the library's director of communications."
The Flickr page is here.
