Several museums and archives post images released under a "no known restrictions" license, which was first made available on January 16, 2008. According to Flickr, the goal of the license is to "firstly show you hidden treasures in the world's public photography archives, and secondly to show how your input and knowledge can help make these collections even richer." Participants include the National Museum of Denmark, Powerhouse Museum, George Eastman Museum, Library of Congress, Nationaal Archief, National Archives and Records Administration, National Library of Scotland, State Library of New South Wales, and Smithsonian Institution.[72][73]