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unknown - Public Domain
Adolf Hohneck - Public Domain
Unidentified photographer - Public Domain
State Library of New South Wales collection -
Barrylb - Public Domain
Nv8200p - CC BY-SA 4.0
Mathew Brady Levin Corot Handy - Public Domain
Public Domain
Warner Brothers Studio - Public Domain
U.S. DoD - Public Domain
scannage personnel - Public Domain
TSGT JAMES F. CLAWSON - Public Domain
Phelps Studio, 1148 Chapel St., New Haven, Conn. - Public Domain
Image from Wikimedia Commons
unknown - Public Domain
Decaisne, Joseph, 1807-1882
Image from Wikimedia Commons
Adolf Hohneck - Public Domain
Welcker, Friedrich Gottlieb, 1784-1868
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Unidentified photographer - Public Domain
Fraser, James Earle, 1876-1953
Image from Wikimedia Commons
State Library of New South Wales collection -
Endurance (Ship)
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Barrylb - Public Domain
Lowe, Ian, 1942-....
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unknown - Public Domain
Bardini, Stéfano 1836-1922
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Brearley, Norman, Sir, 1890-1989
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Nv8200p - CC BY-SA 4.0
Dean, John W. (John Wesley), 1938-
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Brown, Chuck, 1936-2012
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Loisy, Alfred, 1857-1940
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Giolitti, Giovanni, 1842-1928
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Mathew Brady Levin Corot Handy - Public Domain
Hill, Benjamin H. (Benjamin Harvey), 1823-1882
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Hook, Frank Eugene, 1893-1982
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Public Domain
Würtele, Jonathan Saxton Campbell, 1828-1904
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unknown - Public Domain
Ordzhonikidze, Sergo, 1886-1937
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Corey, Wendell, 1914-1968
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Haweis, Thomas, 1734-1820
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Hill, Declan
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Warner Brothers Studio - Public Domain
Egan, Richard, 1921-1987
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U.S. DoD - Public Domain
Mandrell, Barbara.
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Moores, Merrill, 1856-1929
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scannage personnel - Public Domain
Poelaert, Joseph, 1817-1879
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Argentinita, 1898-1945
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unknown - Public Domain
Agardh, Jacob Georg, 1813-1901
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Perfect, William, 1737-1809
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Cambon, Joseph, 1756-1820
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Lee-Hamilton, Eugene
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TSGT JAMES F. CLAWSON - Public Domain
Eanes, António dos Santos Ramalho, 1935-
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Phelps Studio, 1148 Chapel St., New Haven, Conn. - Public Domain
Cook, Albert S. (Albert Stanburrough), 1853-1927
Image from Wikimedia Commons
Little, J. C. (Jesse Carter), 1815-1893