Authors: United States.
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- Jet Propulsion Laboratory (U.S.) - 641 downloads
- Truman, Harry S. 1884-1972 632 downloads
- United States. Air Force - 631 downloads
- United States. Congress. House. Committee on Science and Astronautics. - 621 downloads
- United States. Federal Interdepartmental Task Force on the Potomac - 615 downloads
- United States. Patent Office - 582 downloads
- Johnson, Lyndon B. (Lyndon Baines) 1908-1973 572 downloads
- United States. Supreme Court - 556 downloads
- McBride, James 1788-1859 549 downloads
- Jackson, Andrew 1767-1845 541 downloads
- Consumer and Food Economics Institute (U.S.) - 534 downloads
- Hayes, Rutherford Birchard 1822-1893 517 downloads
- United States District Court for the Eastern District of Pennsylvania - 497 downloads
- United States. Office of Education - 492 downloads
- United States. Department of Education - 489 downloads
- United States. Executive Office of the President - 463 downloads
- United States. Social Security Board - 461 downloads
- United States. Arms Control and Disarmament Agency - 460 downloads
- Fillmore, Millard 1800-1874 459 downloads
- Plattsburgh Barracks (N.Y.) - 455 downloads
- Polk, James K. (James Knox) 1795-1849 455 downloads
- United States. Congress. House. Committee on Homeland Security - 455 downloads
- National Gallery of Art (U.S.) - 449 downloads
- Nixon, Richard M. (Richard Milhous) 1913-1994 449 downloads
- Buchanan, James 1791-1868 447 downloads