Authors: United States. (sorted by popularity)
- United States. Forest Service - 230 downloads
- Taft, William H. (William Howard) 1857-1930 230 downloads
- United States. Congress. House. Committee on Science and Astronautics. - 227 downloads
- United States. Foreign Operations Administration - 226 downloads
- Federal Writers' Project of the Works Progress Administration for the State of North Dakota - 225 downloads
- United States. Department of Defense - 219 downloads
- United States. Congress. Joint Committee on the Conduct of the War - 217 downloads
- United States. Department of Commerce - 213 downloads
- United States. Congress. House. Committee on Un-American Activities - 207 downloads
- United States. Office of Civil Defense - 207 downloads
- United States. National Conservation Congress - 206 downloads
- United States. Bureau of Naval Personnel - 196 downloads
- Federal Writers' Project - 193 downloads
- Northwest Territory Celebration Commission (U.S.) - 193 downloads
- United States. Department of Agriculture - 190 downloads
- United States Rubber Company - 185 downloads
- United States. Congress. House. Committee on Patents - 182 downloads
- U.S. Army Ballistic Research Laboratory - 181 downloads
- Reagan, Ronald 1911-2004 170 downloads
- Van Buren, Martin 1782-1862 159 downloads
- United States Tariff Commission - 152 downloads
- Ford, Gerald R. 1913-2006 138 downloads
- United States. Arms Control and Disarmament Agency - 131 downloads
- United States. Navy Department. Bureau of Ordnance - 129 downloads
- United States. Air Force - 121 downloads
