Founded in April of 1800, the Library of Congress is one of the oldest federal institutions in the United States. Today, the Library of Congress continues to serve as a the central national library for a number of important government documents and materials. The library offers access to its varied materials and resources via its Online Catalog, which may be easily browsed or searched. Furthermore, readers will find links to Additional Catalogs & Research Tools on this page, including the E-Resources Online Catalog, which directs readers to a number of free databases on topics ranging from Law to Science and Technology. Another resource of interest is the Prints and Photographs Online Catalog, which includes dozens of image collections that will be of interest to researchers as well as members of the general public. These collections include the Abdul Hamid II Collection (portraying photographs of the late nineteenth century Ottoman Empire); Cartoon Prints, American and Cartoon Prints, British (featuring over 500 cartoons and caricatures published from the eighteenth and nineteenth centuries); and the Look Collection (sharing images from Look magazine, published between 1952 and 1971).