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Jmabel - CC BY-SA 3.0
Public Domain
Nerazzurra18 - CC BY-SA 4.0
Pier Leone Ghezzi - Public Domain
unknown photographer -
unknown - Public Domain
Konrad Jacobs - CC BY-SA 2.0
Pleyer Photo / ETH Zürich - CC BY-SA 3.0
Henry Reed Stiles, M.D. (1832-1909). - Public Domain
Marcelo Camargo/Agência Brasil -
Skeet Shooter - CC BY-SA 3.0
Lothar Wolleh - CC BY-SA 3.0
Louise Blangini (lithographer) - Public Domain
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Belliard, Augustin Daniel, comte, 1769-1832
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Jmabel - CC BY-SA 3.0
Wilson, Gahan
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Bergmüller, Johann Georg, 1688-1762
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Batlle y Ordóñez, José, 1856-1929
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Haddix, Margaret Peterson.
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Poynting, J. H. (John Henry), 1852-1914
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Public Domain
Halberstam, David
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Nerazzurra18 - CC BY-SA 4.0
Hauser, Arnold, 1892-1978
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Pregl, Fritz, 1869-1930
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Pier Leone Ghezzi - Public Domain
Gaffi, Tommaso Bernardo, 1667-1744
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unknown photographer -
Pijper, Willem
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unknown - Public Domain
Brahm, Otto, 1856-1912
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unknown - Public Domain
McIlwraith, Thomas, 1835-1900
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Public Domain
Carter, Amy
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Konrad Jacobs - CC BY-SA 2.0
Varga, Richard S.
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unknown - Public Domain
White, Compton, 1920-1998
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McWherter, Ned R., 1930-2011
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Pleyer Photo / ETH Zürich - CC BY-SA 3.0
Stiefel, Eduard L., 1909-
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Miller, Emily Huntington, 1833-1913
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Antioch College
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Burdick, Quentin N. (Quentin Northrup), 1908-1992
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Henry Reed Stiles, M.D. (1832-1909). - Public Domain
Murphy, Henry Cruse, 1810-1882
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Sassu, Aligi, 1912-2000
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O'Callaghan, E. B. (Edmund Bailey), 1797-1880
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Marcelo Camargo/Agência Brasil -
Pateman, Carole.
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Skeet Shooter - CC BY-SA 3.0
Hartman, David, 1935-
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Grellet, Stephen, 1773-1855
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Lothar Wolleh - CC BY-SA 3.0
Roth, Dieter, 1930-1998
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Viola, Bill, 1951-....
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Louise Blangini (lithographer) - Public Domain
Blangini