The Smithsonian has joined The Commons on Flickr, which started as a pilot between the Library of Congress and Flickr to increase access to publicly-held photo collections and allow the public to contribute knowledge and information (such as tags) to those collections.
The Smithsonian’s photostream contains some fantastic gems, including portraits of scientists, cyanotypes cataloging the Smithsonian’s other collections, and cool photos from past Folklife festivals.
Go look, add some tags, but be careful- much like the LOC collections, you can find yourself losing hours poking around at this stuff.
This post appeared in its original form at DC Metblogs