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Public Domain
unknown - Public Domain
Cvalverd (original); Rodtico21 (crooped) - CC BY-SA 4.0
Gage Skidmore - CC BY-SA 3.0
Peaches4everyone - CC BY 3.0
NBC-NBC Photo by Frank Carroll - Public Domain
Tamisier (gravure) after Mme J. Reynaud (dessin) - Public Domain
Konrad Jacobs, Erlangen - CC BY-SA 2.0
John Madison Hinde (Sketch) & Thomas S. Hinde (Diary) - Public Domain
National Geographic Society - Public Domain
Universal Film Manufacturing Company - Public Domain
Carlos Guevara - CC BY-SA 3.0
Brigham Young University - Public Domain
Roferbia - CC BY-SA 4.0
Outworldrec - CC BY-SA 3.0
Stephencdickson - CC BY-SA 4.0
Edmund Scott, published by Samuel William Fores, after Mather Brown - Public Domain
WesWashington433 - CC BY-SA 3.0
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Public Domain
Fay, Charles Ernest, 1846-1931
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unknown - Public Domain
Kaufmann, David, 1852-1899
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Shishkin, Ivan Ivanovich, 1832-1898
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unknown - Public Domain
Holmes, Arthur, 1890-1965
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Cvalverd (original); Rodtico21 (crooped) - CC BY-SA 4.0
Carazo, Rodrigo, 1926-2009
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Gage Skidmore - CC BY-SA 3.0
Williams, Billy Dee, 1937-....
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Voisenon, Claude-Henri de Fusée de, 1708-1775
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Peaches4everyone - CC BY 3.0
Grayson, C. Jackson (Charles Jackson), 1923-
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NBC-NBC Photo by Frank Carroll - Public Domain
Törs, Iván
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Tamisier (gravure) after Mme J. Reynaud (dessin) - Public Domain
Reynaud, J. (Jean), 1806-1863
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Konrad Jacobs, Erlangen - CC BY-SA 2.0
Cohn-Vossen, S. (Stephan), 1902-1936
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unknown - Public Domain
Taylor, James, 1769-1848
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unknown - Public Domain
Ledru-Rollin, 1807-1874
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John Madison Hinde (Sketch) & Thomas S. Hinde (Diary) - Public Domain
Hinde, Thomas S. (Thomas Spottswood), 1785-1846
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National Geographic Society - Public Domain
Hayden, Edward Everett, 1858-1932
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Universal Film Manufacturing Company - Public Domain
Perrin, Jack, 1896-1967
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Carlos Guevara - CC BY-SA 3.0
Álvarez, Juan 1790-1867
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Voigt, Woldemar, 1850-1919
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Brigham Young University - Public Domain
Eyring, Carl F. (Carl Ferdinand), 1889-1951
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Collett, Frederik, 1839-1914
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Roferbia - CC BY-SA 4.0
Manns, Patricio, 1937-....
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Public Domain
Geiger, Abraham, 1810-1874
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Outworldrec - CC BY-SA 3.0
Abigail (Abigail Zsiga)
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Farrar, Jay
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MacKinnon, F. D. (Frank Douglas), Sir, 1871-1946
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Stephencdickson - CC BY-SA 4.0
Sheepshanks, John (English collector, 1787-1863)
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Edmund Scott, published by Samuel William Fores, after Mather Brown - Public Domain
Yonge, George, Sir, 1731-1812
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Simon, Roger Lichtenberg
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WesWashington433 - CC BY-SA 3.0
Hurt, Mary Beth
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Reichenbach, Karl, Freiherr von, 1788-1869