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Alan Light - CC BY 2.0
James Forbes - Public Domain
unknown - Public Domain
Photograph published in the 1902 Encyclopedia Britannica - Public Domain
unknown -
Tom Beetz - CC BY 2.0
Gabriela Kotik - CC BY-SA 3.0
Department of Defense. Department of the Army. Office of the Deputy Chief of Staff for Operations. U.S. Army Audiovisual Center. ca. 1974-5/15/1984 -
U.S. Government Printing Office. - Public Domain
eu - CC BY-SA 3.0
Teddyyy - CC BY-SA 3.0
none given - Public Domain
Paul Thompson, photographer. - Public Domain
Bolekaja - CC BY-SA 3.0
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Bowdich, T. Edward (Thomas Edward), 1791-1824
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Alan Light - CC BY 2.0
Rae, Charlotte, 1926-
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Martinson, Harry, 1904-1978
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Holmes, Frederic Lawrence.
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Giffard, Henri, 1825-1882
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James Forbes - Public Domain
Jennings, Jonathan, 1784-1834
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unknown - Public Domain
Berlitz, Charles, 1914-2003
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Photograph published in the 1902 Encyclopedia Britannica - Public Domain
Alford, Henry, 1810-1871
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unknown - Public Domain
Fung, Paul, 1897-1944
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unknown - Public Domain
Gordon, John Brown, 1832-1904
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unknown -
Campana, Dino, 1885-1932
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Cassel, Ernest 1852-
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Tom Beetz - CC BY 2.0
Burke, Solomon, 1940-2010
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Ferrucci, Francesco, 1489-1530
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Gabriela Kotik - CC BY-SA 3.0
Kotík, Jan Jakub, 1972-2007
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Department of Defense. Department of the Army. Office of the Deputy Chief of Staff for Operations. U.S. Army Audiovisual Center. ca. 1974-5/15/1984 -
Méndez Montenegro, Julio César 1915-1996
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U.S. Government Printing Office. - Public Domain
Cole, Albert M. (Albert McDonald), 1901-1994
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Klaproth, M. H. (Martin Heinrich), 1743-1817
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Rice, Condoleezza, 1954-
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Bahr, Hermann, 1863-1934
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Roux, Monsieur (Emile), 1853-1933
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eu - CC BY-SA 3.0
Azkue, Resurrección María de, 1864-1951
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Grayson, Richard S., 1969-....
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unknown - Public Domain
Low, Abiel Abbot, 1811-1893
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Blacker, C. P. (Charles Paton), 1895-1975
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Teddyyy - CC BY-SA 3.0
Barretto, Ray
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Byron, Arthur, 1872-1943
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none given - Public Domain
McBride, Mary Margaret, 1899-
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Paul Thompson, photographer. - Public Domain
Mathewson, Christy, 1880-1925
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Bolekaja - CC BY-SA 3.0
jẹgẹdẹ, dele, 1945-