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unknown - Public Domain
Adolphe Lalauze - Public Domain
anonymous - Public Domain
Erling Mandelmann - CC BY-SA 3.0
Simon Modera - CC BY-SA 4.0
Harlan1000 - CC BY-SA 3.0
Tatehuari el 11 de Febrero de 2007 - Public Domain
Cochise County Sheriff's Office<br/> - Public Domain
Wilson, James Grant, 1832-1914; Fiske, John, 1842-1901; Dick, Charles, 1858-; Homans, James Edward, 1865- - Public Domain
unknown - CC BY 4.0
No photographer named. - Public Domain
Rochester Institute of Technology -
US Government Printing Office - Public Domain
Charles Reutlinger, b.1816 - Public Domain
Unsure - Public Domain
Julian Vannerson (1827-1875) - Public Domain
Public Domain
Jean-Baptiste Perronneau - Public Domain
Conway Studios, Inc., New York City. - Public Domain
Image from Wikimedia Commons
unknown - Public Domain
Knapp, Georg Christian, 1753-1825
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Wank, Roland A. (Roland Anthony), 1898-1970
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Rousseau, Théodore, 1812-1867
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Adolphe Lalauze - Public Domain
Frémiet, Emmanuel, 1824-1910
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Temkin, Owsei, 1902-2002
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anonymous - Public Domain
Berlioz, Harriet Smithson, 1800-1854
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Lloyd, Frank, 1887-1960
Image from Wikimedia Commons
Erling Mandelmann - CC BY-SA 3.0
Rougemont, Denis de 1906-1985
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Simon Modera - CC BY-SA 4.0
Irwin, Eyles, 1751?-1817
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Harlan1000 - CC BY-SA 3.0
Krone, Julie
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Allman, George Johnston, 1824-1904
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Tatehuari el 11 de Febrero de 2007 - Public Domain
Degollado, Santos, 1811-1861
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Cochise County Sheriff's Office<br/> - Public Domain
Wheeler, Harry, 1875-1925
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Henle, Jacob, 1809-1885
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Wilson, James Grant, 1832-1914; Fiske, John, 1842-1901; Dick, Charles, 1858-; Homans, James Edward, 1865- - Public Domain
Lewis, Isaac Newton, 1858-1931
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unknown - CC BY 4.0
Sibson, F. (Francis), 1814-1876
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No photographer named. - Public Domain
Hill, Grace Livingston, 1865-1947
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Rochester Institute of Technology -
Newman, Arnold, 1918-2006
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US Government Printing Office - Public Domain
Duncan, Robert, 1920-2011
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Benson, Ambrosius, 1495-1550
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Charles Reutlinger, b.1816 - Public Domain
Fizeau, H. (Hippolyte), 1819-1896
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Oginski, Michel, 1765-1833
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Unsure - Public Domain
Carlton, Vanessa
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Julian Vannerson (1827-1875) - Public Domain
Royce, Homer Elihu, 1819-1891
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unknown - Public Domain
Martin, Homer Dodge, 1836-1897
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Public Domain
Cannizzaro, Stanislao, 1826-1910
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Jean-Baptiste Perronneau - Public Domain
Cazenove, Théophile, 1740-1811
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Conway Studios, Inc., New York City. - Public Domain
Gwinn, Ralph W. (Ralph Waldo), 1884-1962
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Heijermans, Herman, 1864-1924
Image from Wikimedia Commons
Maupassant, Guy de, 1850-1893