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Bavarian Academy of Sciences and Humanities - Public Domain
photo officielle - Public Domain
Justin Hoch - CC BY 2.0
Myself -
Smithsonian Institution -
Georges Biard - CC BY-SA 3.0
Steel engraving by J. Caron, 1841, after painting by J.L. David, 1793 - Public Domain
Jpzeller8 - Public Domain
unknown - Public Domain
http://www1.appstate.edu/~kms/classes/psy3202/images/ClarkHull2.jpg -
Brunswick Records - Public Domain
Julian Vannerson - Public Domain
US Government Printing Office - Public Domain
Scholefield, E. O. S. (Ethelbert Olaf Stuart), 1875-1919 and Howay, Frederic William, 1867-1943 - Public Domain
Harvey Toliver Cook - Public Domain
US Government Printing Office (Washington, DC), publisher. - Public Domain
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Bavarian Academy of Sciences and Humanities - Public Domain
Kayser, H. (Heinrich), 1853-1940
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photo officielle - Public Domain
Borno, Louis, 1865-1942
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Tallmadge, James, 1778-1853
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Alexander, the Great, 356 B.C.-323 B.C.
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Justin Hoch - CC BY 2.0
Molina, Alfred, 1953-....
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Myself -
Pallu, François, 1626-1684
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Smithsonian Institution -
Bernstein, Theresa
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Georges Biard - CC BY-SA 3.0
Hayek, Salma, 1968-
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Meagher, Thomas Francis, 1823-1867
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Steel engraving by J. Caron, 1841, after painting by J.L. David, 1793 - Public Domain
Danton, Georges-Jacques, 1759-1794
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Bell, C. K. (Charles Keith), 1853-1913
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Jpzeller8 - Public Domain
Harding, Albert Austin, 1880-1958
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unknown - Public Domain
Bonney, Lores, 1897-
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http://www1.appstate.edu/~kms/classes/psy3202/images/ClarkHull2.jpg -
Hull, Clark Leonard, 1884-1952
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Brunswick Records - Public Domain
Wilson, Jackie
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Dalle, Peter 1956-
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Ludwig, Emil, 1881-1948
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Ilchester, Henry Edward Fox-Strangways, Earl of, 1847-1905
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Walker, Mickey, 1903-1981
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Julian Vannerson - Public Domain
Goode, William O. (William Osborne), 1798-1859
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Aronson, Boris, 1900-1980
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US Government Printing Office - Public Domain
Shannon, James, 1952-
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Fairchild, Charles S. (Charles Stebbins), 1842-1924
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Scholefield, E. O. S. (Ethelbert Olaf Stuart), 1875-1919 and Howay, Frederic William, 1867-1943 - Public Domain
Finlayson, Roderick, 1818-1892
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Harvey Toliver Cook - Public Domain
Williams, David Rogerson, 1776-1830
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US Government Printing Office (Washington, DC), publisher. - Public Domain
Bailey, Cleveland Monroe, 1886-1965
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Burns, Robert, 1869-1941
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Smith, Jessica, 1895-1983
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Landon, Michael, 1936-1991
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Allori, Cristofano, 1577-1621