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unknown - Public Domain
Lbabbage - CC BY-SA 4.0
Rob Mieremet / Anefo - CC BY-SA 3.0
cliff1066™ - CC BY 2.0
LBJ Library - CC BY 2.0
Aaron Fulkerson - CC BY-SA 2.0
user at project - CC BY-SA 2.5
Mathew Brady -
Anthony van Dyck -
Theodor de Bry (engraver) - Original uploader was Trintheim - Public Domain
Robman94 - CC BY-SA 3.0
Duncan Rawlinson - CC BY-SA 2.0
Jac. de Nijs / Anefo -
Derek Pell -
Přemysl Otakar - CC BY-SA 4.0
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Hoffmann, C. F. (Charles Frederick), 1838-1913
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unknown - Public Domain
Tilton, William Stowell, 1828-1889
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Hayes, E. A. (Everis Anson), 1855-1942
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Frankl, Viktor E. (Viktor Emil), 1905-1997
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Lbabbage - CC BY-SA 4.0
Babbage, Stuart Barton
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Edward Augustus, Prince, Duke of Kent, 1767-1820
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Rob Mieremet / Anefo - CC BY-SA 3.0
Lehning, Arthur.
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Wain, Louis, 1860-1939
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cliff1066™ - CC BY 2.0
Osborne, Bobby
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LBJ Library - CC BY 2.0
Edwards, Harry, 1942-....
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Macdonald, James, 1954-
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Ben Bella, Ahmed
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Aaron Fulkerson - CC BY-SA 2.0
Coleman, Gary, 1968-2010
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Joy, C. Turner (Charles Turner), 1895-1956
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user at project - CC BY-SA 2.5
Tomšič-Srebotnjak, Dubravka, 1940-
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Lowry, Laurence Stephen, 1887-1976
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unknown - Public Domain
Nevskiĭ, Nikolaĭ Aleksandrovich, 1892-1938
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De Crescenzo, Luciano, 1928-....
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Mathew Brady -
Hart, Roswell, 1824-1883
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Anthony van Dyck -
Crayer, Gaspar de 1584-1669
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Zah, Peterson
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Theodor de Bry (engraver) - Original uploader was Trintheim - Public Domain
Apian, Peter, 1495-1552
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Emerson, Billy, 1929-
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Robman94 - CC BY-SA 3.0
Dawson, Ronnie
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Gray, Louis Patrick, 1916-2005
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Duncan Rawlinson - CC BY-SA 2.0
Jenner, Bruce, 1949-
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Jac. de Nijs / Anefo -
Grootveld, Robert Jasper, 1932-
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Derek Pell -
Pell, Derek
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Sendall, Walter J. (Walter Joseph), 1832-1904
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Přemysl Otakar - CC BY-SA 4.0
Zeman, Karel, 1910-1989