Authors: State by State (sorted by popularity)
- Washington, George 1732-1799 509 downloads
- United States. Army. Signal Corps - 509 downloads
- United States. Department of the Interior - 506 downloads
- United States. Army. Corps of Engineers. Manhattan District - 469 downloads
- United States. Office of Chief of Counsel for the Prosecution of Axis Criminality - 458 downloads
- Geological Survey (U.S.) - 454 downloads
- Girl Scouts of the United States of America - 431 downloads
- Cleveland, Grover 1837-1908 424 downloads
- United States. War Department. General Staff - 403 downloads
- United States. Federal Bureau of Investigation - 393 downloads
- Illinois State Geological Survey - 366 downloads
- United States Food Administration - 346 downloads
- United States. Congress - 345 downloads
- United States. Constitutional Convention (1787) - 308 downloads
- United States. Agricultural Research Service. Human Nutrition Research Division - 302 downloads
- United States. Army. American Expeditionary Forces - 294 downloads
- Harrison, Benjamin 1833-1901 293 downloads
- United States. National Park Service. Division of Publications - 269 downloads
- Federal Writers' Project of the Works Progress Administration for the State of North Dakota - 266 downloads
- United States Rubber Company - 261 downloads
- United States. Bureau of Animal Industry - 254 downloads
- United States. Agricultural Research Service. Consumer and Food Economics Research Division - 251 downloads
- Coolidge, Calvin 1872-1933 227 downloads
- United States. Council of National Defense. Highways Transport Committee - 217 downloads
- Museum of History and Technology (U.S.) - 217 downloads