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Nv8200p - CC BY-SA 3.0
Albert Weisgerber - Public Domain
Capewell & Kimmel, engravers - Public Domain
New York World-Telegram and the Sun staff photographer: Albertin, Walter, photographer. - Public Domain
US Congress - Public Domain
CBS Radio - Public Domain
Bridget Smith / EmmaMI - Public Domain
unknown - Public Domain
Columbia Pictures provided the photo to the Dixie Cup Company for use as a premium. - Public Domain
Public Domain
Foto-AG Gymnasium Melle - CC BY 3.0
Ministerio de Cultura de la Nación Argentina - CC BY-SA 2.0
House Creative Committee - Public Domain
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Horne, R. H. (Richard H.), 1802-1884
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Szent-Györgyi, Albert, 1893-1986
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Oberlin, Johann Friedrich, 1740-1826
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Nv8200p - CC BY-SA 3.0
Nelson, Antonya
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Albert Weisgerber - Public Domain
Levy, Rudolf, 1875-1944
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Capewell & Kimmel, engravers - Public Domain
Legaré, J. M. (James Matthews), 1823-1859
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Madoz, Pascual, 1806-1870
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Smith, John Henry, 1848-1911
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New York World-Telegram and the Sun staff photographer: Albertin, Walter, photographer. - Public Domain
Chayefsky, Paddy, 1923-1981
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University of Chicago.
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Straus, Nathan, 1848-1931
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Howard, Ron, 1954-
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US Congress - Public Domain
Grijalva, Raúl M. (Raúl Manuel), 1948-
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CBS Radio - Public Domain
Shockley, Marian, 1911-1981
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Simkins, Modjeska Monteith, 1899-1992
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Bridget Smith / EmmaMI - Public Domain
Smith, Bridget, 1966-....
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unknown - Public Domain
Cleland, Ralph Erskine.
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Darmstaedter, Ludwig, 1846-1927
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Osborne, Adam
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Columbia Pictures provided the photo to the Dixie Cup Company for use as a premium. - Public Domain
McCoy, Tim
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Girtin, Thomas, 1775-1802
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Public Domain
Bartlett, Willard
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Foto-AG Gymnasium Melle - CC BY 3.0
Brantner, Franziska
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McBain, Ed, 1926-2005
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Cori, C. F. (Carl Ferdinand), 1896-1984
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Nuttall, L. John (Leonard John), 1834-1905
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Fisher, Ronald Aylmer, Sir, 1890-1962
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Brøndsted, P. O. (Peter Oluf), 1780-1842
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Ministerio de Cultura de la Nación Argentina - CC BY-SA 2.0
Trouvé, Tatiana
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House Creative Committee - Public Domain
Newman, Marie, 1964-