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Conrad Ruf (1840-1922) - Public Domain
Jaqen - CC BY-SA 4.0
HaWe - CC BY-SA 3.0
Public Domain
Julien Léopold Boilly (1796-1874) - Public Domain
Jacobus Hendrik Pierneef - Public Domain
The Nobel Foundation -
unknown - Public Domain
Teddyyy - CC BY-SA 3.0
National Photo Company Collection (Library of Congress) - Public Domain
H. Bury - Public Domain
No photographer credited. - Public Domain
(U.S. Air Force Photo/Mike Kaplan) - Public Domain
M P Publishing - Public Domain
Atick90 - CC BY-SA 4.0
South Dakota State Historical Society - Public Domain
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Turk, Gavin
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Internet Archive Book Images - Public Domain
Piero, della Francesca, 1416?-1492
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Conrad Ruf (1840-1922) - Public Domain
Heyne, Moriz, 1837-1906
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Lester, C. Edwards (Charles Edwards), 1815-1890
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Jaqen - CC BY-SA 4.0
Brennan, J. H.
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HaWe - CC BY-SA 3.0
Fox, Charles James, 1798?-1874
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Public Domain
Emmons, Delos C. (Delos Carleton), 1888-1965
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Donnelly, Phil M., 1891-1961
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Todd, Thelma, 1905-1935
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Julien Léopold Boilly (1796-1874) - Public Domain
Girard, P.-S. (Pierre-Simon), 1765-1836
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Caroline Bonaparte, consort of Joachim Murat, King of Naples, 1782-1839
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Morehouse, Chauncey
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Jacobus Hendrik Pierneef - Public Domain
Totius, 1877-1953
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Neuendorff, Adolf, 1843-1897
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The Nobel Foundation -
Von Békésy, Georg, 1899-1972
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unknown - Public Domain
Benteen, Frederick William, 1834-1898
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Teddyyy - CC BY-SA 3.0
Fuller, Samuel, 1912-1997
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National Photo Company Collection (Library of Congress) - Public Domain
Williams, Margaret Lindsay, 1888-1960
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H. Bury - Public Domain
Bury, Herbert, 1853-1933
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Lubbock, John, Sir, 1834-1913
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Drake, Joseph Rodman, 1795-1820
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Harris, Robert, 1830-1894
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Bentham, George, 1800-1884
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No photographer credited. - Public Domain
Brehm, Marie Caroline, 1859-1926
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(U.S. Air Force Photo/Mike Kaplan) - Public Domain
Bowden, Mark, 1951-....
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Huxley, Aldous, 1894-1963
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M P Publishing - Public Domain
Stowell, William, 1885-1919
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Atick90 - CC BY-SA 4.0
Stern, Guy, 1922-....
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South Dakota State Historical Society - Public Domain
Leavenworth, Henry, 1783-1834
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Barros Arana, Diego, 1830-1907