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unknown - Public Domain
Pablo Magee - CC BY-SA 3.0
Gustave Courbet - Public Domain
KesslerRonald - CC BY-SA 4.0
GFHund - CC BY 3.0
University of California, Davis - Public Domain
Zac Short - CC BY-SA 2.0
Asaini0603 - CC BY-SA 3.0
unidentified photographer, snapshot / photo instantané - Public Domain
:en:Heinrich Suter - Public Domain
Kergourlay - CC BY-SA 4.0
*derivative work: Wildhartlivie - Public Domain
Edward Mascall - Public Domain
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Sheldon, Lionel A. (Lionel Allen), 1831-1917
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Meyer, Ernst 1887-1930
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Stables, Gordon, 1840-1910
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O'Neill, William A. (William Atchison), 1930-2007
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Augier, Émile, 1820-1889
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unknown - Public Domain
Farrand, Livingston, 1867-1939
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Pablo Magee - CC BY-SA 3.0
Altman, John, 1949-....
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McClory, Robert, 1908-1988
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unknown - Public Domain
Valletti, Cesare
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Funk, Walther, 1890-1960
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Floyd, Pretty Boy, 1904-1934
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Franck, Kaj, 1911-1989
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Gustave Courbet - Public Domain
Gautier, Amand-Désiré, 1825-1894
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KesslerRonald - CC BY-SA 4.0
Kessler, Greg
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Davis, John J. (John James), 1835-1916
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GFHund - CC BY 3.0
Scheel, Karl, 1866-1936
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University of California, Davis - Public Domain
Vanderhoef, Larry N.
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Cellier, Alfred
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Zac Short - CC BY-SA 2.0
Short, Don L. (Don Levingston), 1903-1982
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Asaini0603 - CC BY-SA 3.0
Jones, Maitland, jr., 1937-
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Gayle, Margot.
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Parlatore, Filippo, 1816-1877
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unidentified photographer, snapshot / photo instantané - Public Domain
Magnard, Albéric, 1865-1914
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:en:Heinrich Suter - Public Domain
Suter, H. (Heinrich), 1848-1922
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Kergourlay - CC BY-SA 4.0
Prigent, Denez
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Schwill, William Valentine 1864-
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Watson, Elkanah, 1758-1842
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*derivative work: Wildhartlivie - Public Domain
Harris, Danielle
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Edward Mascall - Public Domain
Greaves, John, 1602-1652
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Cox, Christina, 1971-