Authors: United States. (sorted by popularity)
- United States. Federal Bureau of Investigation - 650 downloads
- Washington, George 1732-1799 616 downloads
- United States. War Department. General Staff - 595 downloads
- Girl Scouts of the United States of America - 592 downloads
- United States. Army. Corps of Engineers. Manhattan District - 568 downloads
- United States. Office of Chief of Counsel for the Prosecution of Axis Criminality - 548 downloads
- Cleveland, Grover 1837-1908 467 downloads
- Jet Propulsion Laboratory (U.S.) - 432 downloads
- United States. Agricultural Research Service. Human Nutrition Research Division - 432 downloads
- United States. Department of the Army. Office of Military History - 431 downloads
- Coolidge, Calvin 1872-1933 429 downloads
- United States. Bureau of the Census - 407 downloads
- Geological Survey (U.S.) - 382 downloads
- McKinley, William 1843-1901 366 downloads
- Harrison, Benjamin 1833-1901 320 downloads
- United States. Public Health Service - 317 downloads
- United States. Agricultural Research Service. Consumer and Food Economics Research Division - 313 downloads
- United States. Constitutional Convention (1787) - 310 downloads
- United States. Council of National Defense. Highways Transport Committee - 296 downloads
- United States. Congress - 286 downloads
- United States. National Park Service. Division of Publications - 259 downloads
- United States. Bureau of Animal Industry - 239 downloads
- Eisenhower, Dwight D. (Dwight David) 1890-1969 239 downloads
- United States. Congress. House. Committee on Science and Astronautics. - 237 downloads
- Taft, William H. (William Howard) 1857-1930 234 downloads
