The Library of Congress is the largest library in the world, with over 173 million books, recordings, photographs, newspapers, maps and manuscripts in its collections. The Library is the main research arm of the U.S. Congress and the home of the U.S. Copyright Office.

The Library of Congress's mission is to engage, inspire, and inform Congress and the American people with a universal and enduring source of knowledge and creativity. Our vision is that all Americans are connected to the Library of Congress.