Authors: United States.
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- Harrison, Benjamin 1833-1901 3077 downloads
- Roosevelt, Franklin D. (Franklin Delano) 1882-1945 2991 downloads
- United States. National Conservation Congress - 2969 downloads
- Adams, John 1735-1826 2902 downloads
- United States. National Aeronautics and Space Administration - 2856 downloads
- Washington, George 1732-1799 2835 downloads
- Kennedy, John F. (John Fitzgerald) 1917-1963 2709 downloads
- Federal Writers' Project of the Works Progress Administration for the State of North Dakota - 2537 downloads
- Girl Scouts of the United States of America - 2472 downloads
- McKinley, William 1843-1901 2068 downloads
- United States. Constitutional Convention (1787) - 2012 downloads
- United States. Federal Bureau of Investigation - 2006 downloads
- Museum of History and Technology (U.S.) - 1905 downloads
- United States. War Department. General Staff - 1872 downloads
- United States. Bureau of the Census - 1848 downloads
- United States. Council of National Defense. Highways Transport Committee - 1824 downloads
- United States. Agricultural Research Service. Human Nutrition Research Division - 1804 downloads
- United States. Army. Corps of Engineers. Manhattan District - 1645 downloads
- United States. Department of the Army. Office of Military History - 1600 downloads
- United States. Army. Signal Corps - 1568 downloads
- United States. National Park Service. Division of Publications - 1566 downloads
- Reagan, Ronald 1911-2004 1551 downloads
- United States. Agricultural Research Service. Consumer and Food Economics Research Division - 1528 downloads
- Bush, George W. (George Walker) 1946- 1457 downloads
- United States. Congress. House. Committee on Un-American Activities - 1431 downloads