A portal to U.S. Government images and photos. Includes links to image rich government sites such as the Library of Congress, branches of the military, the U.S. Mint and the National Park Service. A wide range of images are available, from historical baseball featured in the Spalding Base Ball Guides to satellite images taken by the Landsat-7. "Most of these images and graphics are available for use in the public domain, and they may be used and reproduced without permission or fee. However, some images may be protected by license."