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unknown - Public Domain
Romainbehar - CC0 1.0
Public Domain
unknown photographer - Public Domain
Mathew Brady - Public Domain
Dodd Mead and Co. - Public Domain
Smithsonian Institution -
Norman Abramson - Public Domain
Dmitry Scherbie - CC BY-SA 2.0
w:en:Hossam el-Hamalawy - CC BY 2.0
Hydealfred -
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unknown - Public Domain
Dean, Gordon E., 1905-1958
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Mills, Arthur, 1887-
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Schulze, Franz Eilhard, 1840-1921
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Hoare, William, 1707-1792
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Romainbehar - CC0 1.0
Witkowski, Georges Martin
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Zermelo, Ernst, 1871-1953
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Public Domain
Pfaff, Johann Friedrich, 1765-1825
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Hillegas, Michael, 1729-1804
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Kefauver, Estes, 1903-1963
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unknown - Public Domain
Contarini, Francesco, 1554-1624
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Won Pat, Antonio Borja, 1908-1987
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Blacker, Valentine, 1778-1823
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unknown - Public Domain
Inber, Vera
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unknown photographer - Public Domain
Millhauser, Bertram, 1892-1958
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Iwaszkiewicz, Jarosław, 1894-1980
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Mathew Brady - Public Domain
Granger, Gordon, 1822-1876
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Dodd Mead and Co. - Public Domain
Kester, Paul, 1870-1933
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Cos-Gayón, Fernando, 1825-1898
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Smithsonian Institution -
Birket-Smith, Kaj, 1893-1977
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Norman Abramson - Public Domain
Abramson, Norman.
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Roach, Jay
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Public Domain
Pitt, William, 1855-1918
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Dmitry Scherbie - CC BY-SA 2.0
Fortune, Sonny
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unknown - Public Domain
Ralston, Samuel M. (Samuel Moffett), 1857-1925
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w:en:Hossam el-Hamalawy - CC BY 2.0
Beinin, Joel, 1948-....
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Saussure, Henri de 1829-1905
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Hydealfred -
Cole, Stephanie, 1941-
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Winstanley, John, approximately 1678-1750
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Preisser, June, 1921-1984
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Martin, Claude, 1735-1800