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Antoine Graincourt - Public Domain
Everts & Ensign (Philadelphia) publishers. Based on photo by J. R. Allis, Chatham, N.Y. - Public Domain
1-555-confide - CC BY 3.0
Elijahwald - CC BY-SA 4.0
unknown - Public Domain
Thom C - CC BY 2.0
Julius Schaarwächter - Public Domain
USN - Public Domain
Garik83 - CC BY-SA 4.0
Michiel Jansz. van Miereveldt - Public Domain
Alfred Wegener - CC BY-SA 4.0
Guy MacPherson - CC BY 2.0
Joseph Simpson - Public Domain
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Antoine Graincourt - Public Domain
Duquesne, Abraham, 1610-1688
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Everts & Ensign (Philadelphia) publishers. Based on photo by J. R. Allis, Chatham, N.Y. - Public Domain
Gillet, Ransom H. (Ransom Hooker), 1800-1876
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Waldeck, Frédéric de 1766-1875
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Rice, Alexander Hamilton, 1875-1956
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1-555-confide - CC BY 3.0
Norris, David, 1944-
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Gál, Hans, 1890-1987
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Elijahwald - CC BY-SA 4.0
Hubbard, Ruth, 1924-....
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unknown - Public Domain
Sykes, Roosevelt
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Thom C - CC BY 2.0
Larkin, Patty
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Blumentritt, Ferdinand, 1853-1913
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Baker, Diane, 1938-....
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Julius Schaarwächter - Public Domain
Schott, Anton 1846-1913
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Hensel, Wilhelm, 1794-1861
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USN - Public Domain
Backus, Standish, 1910-1989
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Garik83 - CC BY-SA 4.0
Fortichiari, Bruno
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Michiel Jansz. van Miereveldt - Public Domain
Roe, Thomas, Sir, 1581?-1644
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Kuh, Anton. 1890-1941
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unknown - Public Domain
Douglas, Gawin, 1474?-1522
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Fox, Curly
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Colonna, Lorenzo Onofrio, 1637-1689
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Grützner, Eduard von, 1846-1925
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Alfred Wegener - CC BY-SA 4.0
Braitenberg, Valentino
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Goodnow, Frank J., 1859-1939
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Cozens, John Robert, 1752-1797
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Guy MacPherson - CC BY 2.0
Henderson, Joe, 1937-2001
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unknown - Public Domain
Warren, Harry
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Wolf, Joseph, 1820-1899
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Price, Bartholomew, 1818-1898
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Sharp, Thomas, 1693-1758
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Joseph Simpson - Public Domain
Palmer, William, 1824-1856