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United States Senate Historical Society - Public Domain
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unknown - Public Domain
Marion Golsteijn - CC BY-SA 3.0
Smdl - CC BY-SA 3.0
rhetoricafrica.org -
Edward Steichen - CC BY-SA 2.0
John Singer Sargent - Public Domain
Bonar, Andrew A. - Public Domain
GustavoGauthier - CC BY-SA 3.0
unknown - CC BY 3.0
Unknown, but believed to within the PD. - Public Domain
Emil Orlik - Public Domain
Public Domain
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Anton Ulrich, Herzog von Braunschweig-Wolfenbüttel, 1633-1714
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Rowe, Kenneth Thorpe, 1900-1988
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United States Senate Historical Society - Public Domain
Gurney, Chan, 1896-1985
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Lucullus, approximately 117 B.C.-approximately 56 B.C.
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Briggs, William, -1704
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Filonov, Pavel Nikolaevich, 1883-1941
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Blumenthal, Daniel
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Lamb, Matt, 1932-2012
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unknown - Public Domain
Sulzer, Salomon, 1804-1890
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unknown - Public Domain
Fernández Montaña, José
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Marion Golsteijn - CC BY-SA 3.0
Houwer, Rob, 1937-...
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Nilsson, Christine, 1843-1921
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Smdl - CC BY-SA 3.0
Crowley, John, 1969-....
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rhetoricafrica.org -
Salazar, Philippe-Joseph.
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Highmore, Nathaniel, 1613-1685
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Edward Steichen - CC BY-SA 2.0
Freer, Charles Lang, 1854-1919
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Nell, William C. (William Cooper), 1816-1874
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John Singer Sargent - Public Domain
Vanderbilt, George Washington, 1862-1914
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Bonar, Andrew A. - Public Domain
M'Cheyne, Robert Murray, 1813-1843
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GustavoGauthier - CC BY-SA 3.0
Álvarez, Baltasar 1533-1580
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unknown - CC BY 3.0
Galloway, Charles B. (Charles Betts), 1849-1909
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Tonti, Henri de, -1704
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Saint-Evremond, 1613-1703
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Unknown, but believed to within the PD. - Public Domain
Henrici, O. (Olaus), 1840-1918
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Desmarest, Nicolas, 1725-1815
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Emil Orlik - Public Domain
Walden, Herwarth, 1878-1941
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Bock, Hieronymus, 1498-1554
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Arlincourt, vicomte d' (Charles Victor Prévôt), 1789-1856
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Public Domain
Murphy, John, 1786-1841
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Uesugi, Yōzan, 1751-1822