The Library of Congress has a Flickr page! It is amazing! They started this project as a way to share photos with people who may not visit the library website and as an experiment with web communities. Many of these photos were provided to the Library with no further information, they are asking folks with any information to comment and add notes to the photos. They have left all the tagging up to the viewers, encourage many comments and are asking the public to request the types of photos we would like to see in the future. The coolest part is that these photos are pretty large and could printed! Wow. The pilot program will only last as long as there is user intrest so go, see, comment!!! Here are the FAQ's.