Authors: United States.
- Adams, John 1735-1826 2129 downloads
- Coolidge, Calvin 1872-1933 2100 downloads
- Girl Scouts of the United States of America - 1994 downloads
- United States. Army. American Expeditionary Forces - 1884 downloads
- United States. Congress - 1877 downloads
- Washington, George 1732-1799 1813 downloads
- Kennedy, John F. (John Fitzgerald) 1917-1963 1791 downloads
- Museum of History and Technology (U.S.) - 1780 downloads
- United States. Council of National Defense. Highways Transport Committee - 1531 downloads
- United States. Bureau of Animal Industry - 1520 downloads
- United States. Agricultural Research Service. Human Nutrition Research Division - 1496 downloads
- McKinley, William 1843-1901 1452 downloads
- United States. Department of the Army. Office of Military History - 1367 downloads
- United States. Bureau of the Census - 1327 downloads
- United States. Agricultural Research Service. Consumer and Food Economics Research Division - 1208 downloads
- United States. Federal Bureau of Investigation - 1192 downloads
- Geological Survey (U.S.) - 1172 downloads
- United States. Army. Corps of Engineers. Manhattan District - 1150 downloads
- United States. Constitutional Convention (1787) - 1149 downloads
- United States. National Park Service. Division of Publications - 1138 downloads
- United States. National Conservation Congress - 994 downloads
- United States. Army. Signal Corps - 987 downloads
- United States. Public Health Service - 885 downloads
- United States. Congress. House. Committee on Un-American Activities - 882 downloads
- United States Food Administration - 880 downloads
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