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J. Stirling Coyne - Public Domain
Fritz Leopold Hennig - CC BY 3.0
Joseolgon - CC BY-SA 3.0
Thierry Caro - CC BY-SA 3.0
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University of Ohio (no specific author named) - Public Domain
Jean Auguste Dominique Ingres - Public Domain
Mathew Brady - Public Domain
Wilhelm Fechner (1835-1909) [http://www.fotorevers.eu/katalog1.php?details=2522] - Public Domain
Bob Travis - CC BY 2.0
unknown - Public Domain
abderaman tazi -
"Copyrighted by Pach." - Public Domain
rhetoricafrica.org -
image created by Berkan -
Edward Sanford Harrison (editor-publisher); photographer unknown - Public Domain
unidentified photographer - Public Domain
currybet - CC BY-SA 2.0
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J. Stirling Coyne - Public Domain
Mornington, Garrett Colley Wellesley, Earl of, 1735-1781
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Fritz Leopold Hennig - CC BY 3.0
Herrmann, Josef, 1903-1955
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Joseolgon - CC BY-SA 3.0
John of God, Saint, 1495-1550
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Thierry Caro - CC BY-SA 3.0
Becker, Howard Saul, 1928-....
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original uploader -
Cockburn, Henry Cockburn, Lord, 1779-1854
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University of Ohio (no specific author named) - Public Domain
Wyatt, David K.
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Jean Auguste Dominique Ingres - Public Domain
Gatteaux, Edouard 1788-1881
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Debret, Jean-Baptiste, 1768-1848
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Mathew Brady - Public Domain
Van Buren, John, 1810-1866
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Wilhelm Fechner (1835-1909) [http://www.fotorevers.eu/katalog1.php?details=2522] - Public Domain
Baginsky, A. (Adolf), 1843-1918
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Richter, Hans Werner, 1908-1993
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Zeller, Carl, 1842-1898
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Bob Travis - CC BY 2.0
Cruz, Adam
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unknown - Public Domain
Hubbard, Thomas H. (Thomas Hamlin), 1838-1915
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unknown - Public Domain
Blatchford, Samuel, 1820-1893
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abderaman tazi -
Morillo, Erick, 1971-
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Ulloa, Antonio de 1716-1795
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unknown - Public Domain
Pinsker, Simḥah, 1801-1864
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"Copyrighted by Pach." - Public Domain
Adee, Alvey A. (Alvey Augustus), 1842-1924
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rhetoricafrica.org -
Salazar, Philippe-Joseph.
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image created by Berkan -
Westmeyer, Friedrich
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Edward Sanford Harrison (editor-publisher); photographer unknown - Public Domain
Rowe, P. T. (Peter Trimble), 1856-1942
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Cantor, Moritz, 1829-1920
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D'Albert, Eugen, 1864-1932
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unidentified photographer - Public Domain
Weems, Katherine Lane
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unknown - Public Domain
Caine, Georgia, 1876-1964
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Crutzen, Paul J., 1933-....
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King, Philip Gidley, 1758-1808
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currybet - CC BY-SA 2.0
Sullivan, Neil
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Kaluta, Michael William