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unknown - Public Domain
unknown painter - Public Domain
Associated Booking Corporation (agent)/photo-Bruno of Hollywood - Public Domain
Los Alamos National Laboratory - Public Domain
Michigan Academy of Science - Public Domain
August Weger - Public Domain
:en:John Faber Junior - Public Domain
Diego Mascarenhas - CC BY-SA 3.0
Frederick Winthrop Faxon - Public Domain
original uploader - Public Domain
Laura Kolb - CC BY 2.0
Brady-Handy Photograph Collection (Library of Congress) - Public Domain
Mystic Meg - CC BY-SA 3.0
Public Domain
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Vernon, Mickey, 1918-2008
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Carnahan, Joe
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unknown - Public Domain
Celsing, Peter, 1920-1974
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Piccard, Don, 1926-
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unknown painter - Public Domain
Trask, Katrina, 1853-1922
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Stark, John, 1728-1822
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Rejlander, O. G. (Oscar Gustav), 1813-1875
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Oxford, Edward de Vere, Earl of, 1550-1604
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Force, M. F. (Manning Ferguson), 1824-1899
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Associated Booking Corporation (agent)/photo-Bruno of Hollywood - Public Domain
White, Slappy
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Los Alamos National Laboratory - Public Domain
Bainbridge, Kenneth T. (Kenneth Tompkins), 1904-1996
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Jacobsen, Carl Christian Hilmann, 1842-1914
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La Condamine, Charles-Marie de 1701-1774
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Michigan Academy of Science - Public Domain
Hubbard, Bela, 1814-1896
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August Weger - Public Domain
Dorn, Heinrich Ludwig Egmont, 1804-1892
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unknown - Public Domain
Stockham, Alice B. (Alice Bunker), 1833-1912
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:en:John Faber Junior - Public Domain
Pengelly, Thomas, Sir, 1675-1730
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Diego Mascarenhas - CC BY-SA 3.0
Ribeiro, Joăo Ubaldo, 1941-
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Hollingshead, John
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Pocock, George, Sir, 1706-1792
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Frederick Winthrop Faxon - Public Domain
Askew, Sarah B. (Sarah Byrd), 1863-1942
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original uploader - Public Domain
Fogg, George Gilman, 1813-1881
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Brian, Mary, 1906-2002
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Villani, Giovanni, 1280-1348
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Chamberlain, Neville, Sir, 1820-1902
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Laura Kolb - CC BY 2.0
Lamond, Don
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Brady-Handy Photograph Collection (Library of Congress) - Public Domain
Cabell, George C. (George Craighead), 1836-1906
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Jenkins, Leoline, Sir, 1623-1685
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Mystic Meg - CC BY-SA 3.0
Carr, Bernard, 1949-
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Public Domain
Isabella, Queen, consort of Edward II, King of England, 1292-1358