Authors: United States. (sorted by popularity)
- United States. Federal Bureau of Investigation - 664 downloads
- United States. War Department. General Staff - 615 downloads
- Washington, George 1732-1799 604 downloads
- Girl Scouts of the United States of America - 604 downloads
- United States. Army. Corps of Engineers. Manhattan District - 567 downloads
- United States. Office of Chief of Counsel for the Prosecution of Axis Criminality - 561 downloads
- Cleveland, Grover 1837-1908 474 downloads
- United States. Agricultural Research Service. Human Nutrition Research Division - 438 downloads
- United States. Department of the Army. Office of Military History - 437 downloads
- Coolidge, Calvin 1872-1933 420 downloads
- Jet Propulsion Laboratory (U.S.) - 411 downloads
- United States. Bureau of the Census - 410 downloads
- Geological Survey (U.S.) - 375 downloads
- McKinley, William 1843-1901 374 downloads
- United States. Agricultural Research Service. Consumer and Food Economics Research Division - 326 downloads
- United States. Public Health Service - 319 downloads
- Harrison, Benjamin 1833-1901 307 downloads
- United States. Constitutional Convention (1787) - 306 downloads
- United States. Council of National Defense. Highways Transport Committee - 290 downloads
- United States. Congress - 289 downloads
- United States. Bureau of Animal Industry - 261 downloads
- United States. National Park Service. Division of Publications - 257 downloads
- Eisenhower, Dwight D. (Dwight David) 1890-1969 247 downloads
- Museum of History and Technology (U.S.) - 246 downloads
- Army War College (U.S.) - 242 downloads
