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Argonne National Laboratory - Public Domain
Annemarie Heinrich - Public Domain
Unknown German photograph, 1900 - Public Domain
Congregation of Holy Cross - CC BY-SA 3.0
http://50.asc.upenn.edu - CC0 1.0
Bain - Public Domain
Rugg - Public Domain
Carl Van Vechten - Public Domain
Görtz, portrait by an unknown artist; in Gripsholm Castle, Sweden - Courtesy of the Svenska Portrattarkivet, Stockholm - Public Domain
Michaelstangland - CC BY-SA 3.0
V. Azzola - Public Domain
Frans Pourbus (II) - Public Domain
Edward G. Porter - Public Domain
Slowking4 -
Public Domain
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Reszke, Edouard de 1853-1917
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Argonne National Laboratory - Public Domain
Libby, Leona Marshall, 1919-....
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Annemarie Heinrich - Public Domain
Sosa, Mercedes
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Manteuffel, Hasso von, 1897-1978
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Unknown German photograph, 1900 - Public Domain
Stettenheim, Julius, 1831-1916
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Stovall, Babe, 1907-1974
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Corelli, Arcangelo
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Congregation of Holy Cross - CC BY-SA 3.0
Moreau, Basile-Antoine-Marie, 1799-1873
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Gerbner, George
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Wilson, Thomas, 1525?-1581
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Nessen, Ron, 1934-....
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Bain - Public Domain
Women's Land Army of America
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Nielsen, Jakob, 1890-1959
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Rugg - Public Domain
Valesh, Eva McDonald, 1866-1956
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Carl Van Vechten - Public Domain
Buechner, Frederick, 1926-....
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Bourinot, John George, 1837-1902
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Görtz, portrait by an unknown artist; in Gripsholm Castle, Sweden - Courtesy of the Svenska Portrattarkivet, Stockholm - Public Domain
Görtz, Georg Heinrich von, Freiherr von Schlitz, 1668-1719
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Brühl, Heinrich, Graf von, 1700-1763
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Michaelstangland - CC BY-SA 3.0
Peterson, Holly.
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Chase, Ken
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V. Azzola - Public Domain
Muratori, Lodovico Antonio, 1672-1750
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Huntingford, George Isaac, 1748-1832
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Fried, Erich
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Grey, John, 1785-1868
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Frans Pourbus (II) - Public Domain
Vincenzo I Gonzaga, Duke of Mantua, 1562-1612
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Von Mises, Ludwig, 1881-1973
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Edward G. Porter - Public Domain
Haswell, Robert, 1768-1801
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Dautzenberg, Ph. (Philippe), 1849-1935
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Slowking4 -
Share, Don, 1957-
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Public Domain
Stephens, John L., 1805-1852