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SpringerLink (Online service)
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Jet Propulsion Laboratory (U.S.)
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Library of Congress. Congressional Research Service
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Columbus, Christopher
33 results
United States. Army. Corps of Engineers
32 results
Goddard Space Flight Center
30 results
ebrary, Inc
30 results
Cook, James, 1728-1779
28 results
Núñez Cabeza de Vaca, Alvar, active 16th century
28 results
NASA Glenn Research Center
27 results
United States. Congress. Senate. Committee on Commerce, Science, and Transportation
25 results
Geological Survey (U.S.)
22 results
Raynal, abbé (Guillaume-Thomas-François), 1713-1796
22 results
United States
22 results
Frémont, John Charles, 1813-1890
21 results
Hakluyt, Richard, 1552?-1616
19 results
Langley Research Center
19 results
United States. War Department
19 results
United States. Army. Corps of Topographical Engineers
18 results
United States. Government Accountability Office
18 results
Froehlich, Annette
17 results
Quinn, David B.
17 results
United States. Congress. House. Committee on Science, Space, and Technology
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United States. Congress. Senate. Committee on Commerce, Science, and Transportation. Subcommittee on Science, Technology, and Space
17 results
Warner Home Video (Firm)
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Educational Research Council of America. Social Science Staff
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Pike, Zebulon Montgomery, 1779-1813
16 results
Remington, Frederic, 1861-1909
16 results
United States. Department of State
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Adam Matthew Digital (Firm)
15 results
Fernández de Oviedo y Valdés, Gonzalo, 1478-1557
15 results
United States. Congress. House. Committee on Science, Space, and Technology (2011- ). Subcommittee on Space
15 results
United States. Congress. House. Committee on Science, Space, and Technology. Subcommittee on Space
15 results
United States. Office of Space Science
15 results
American Astronautical Society
14 results
Casas, Bartolomé de las, 1484-1566
14 results
Harland, David M. (David Michael), 1955-
14 results
Bolton, Herbert Eugene, 1870-1953
13 results
British Library
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Lyndon B. Johnson Space Center
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National Geographic Society (U.S.)
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Powell, John Wesley, 1834-1902
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Raleigh, Walter, Sir, 1552?-1618
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United States. Congress. House. Committee on Science, Space, and Technology (2011- ). Subcommittee on Space and Aeronautics
13 results
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