Authors: United States.
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- Coolidge, Calvin 1872-1933 3020 downloads
- Roosevelt, Franklin D. (Franklin Delano) 1882-1945 2974 downloads
- Harrison, Benjamin 1833-1901 2901 downloads
- United States. National Aeronautics and Space Administration - 2877 downloads
- Adams, John 1735-1826 2862 downloads
- Kennedy, John F. (John Fitzgerald) 1917-1963 2685 downloads
- United States. National Conservation Congress - 2610 downloads
- Girl Scouts of the United States of America - 2313 downloads
- Federal Writers' Project of the Works Progress Administration for the State of North Dakota - 2301 downloads
- United States. Agricultural Research Service. Human Nutrition Research Division - 2109 downloads
- McKinley, William 1843-1901 1954 downloads
- United States. Bureau of the Census - 1870 downloads
- United States. Agricultural Research Service. Consumer and Food Economics Research Division - 1826 downloads
- United States. War Department. General Staff - 1768 downloads
- Museum of History and Technology (U.S.) - 1743 downloads
- United States. Council of National Defense. Highways Transport Committee - 1721 downloads
- United States. Federal Bureau of Investigation - 1625 downloads
- United States. National Park Service. Division of Publications - 1599 downloads
- United States. Army. Corps of Engineers. Manhattan District - 1576 downloads
- United States. Department of the Army. Office of Military History - 1564 downloads
- United States. Army. Signal Corps - 1548 downloads
- United States. Constitutional Convention (1787) - 1520 downloads
- United States. Public Health Service - 1478 downloads
- Taft, William H. (William Howard) 1857-1930 1311 downloads
- Geological Survey (U.S.) - 1305 downloads