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United States Congress - Public Domain
No photographer named in original source. - Public Domain
Pietro da Cortona - Public Domain
martinscriminalcode - CC BY-SA 3.0
Scanpix/Gunnar Lantz/SvD - Public Domain
iDominick - CC BY-SA 2.0
Unknown Artists, photo by Tayloe Cook - CC BY 3.0
unknown - Public Domain
V. Green, mezzotint, pubd 1771 (after oil painting by N. Drake) (see above) - Public Domain
Sculpture: :fr:Auguste Carli<br />Photo: Myst - CC BY-SA 3.0
anonymous - Public Domain
Globetrotter19 - CC BY-SA 3.0
various; University of Oklahoma - Public Domain
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Russell, William, 1782-1845
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Job
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Escoto, Miguel d' 1933-
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Lindsay, Coutts, Sir, 1824-1913
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United States Congress - Public Domain
Wales, John, 1783-1863
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No photographer named in original source. - Public Domain
Edge, Rosalie, 1877-1962
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Da Costa, J. M. (Jacob Mendes), 1833-1900
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Pietro da Cortona - Public Domain
Sacchetti, Giulio, 1587-1663
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Mill, Harriet Hardy Taylor, 1807-1858
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Mann, Heinrich, 1871-1950
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martinscriminalcode - CC BY-SA 3.0
Greenspan, Edward L.
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Macleish, Archibald
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Auberjonois, René 1940-
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Muhlenberg, Henry Melchior, 1711-1787
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Scanpix/Gunnar Lantz/SvD - Public Domain
Josephson, Erland, 1923-2012
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Cary, Archibald, 1721-1787
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iDominick - CC BY-SA 2.0
Waterston, Sam
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Unknown Artists, photo by Tayloe Cook - CC BY 3.0
Tayloe, John, 1687-1747
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Azara, José Nicolás de, marqués de Nibbiano, 1730 or 1731-1804
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unknown - Public Domain
Falloppio, Gabriele, 1523-1562
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Catrik, John, -1419
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V. Green, mezzotint, pubd 1771 (after oil painting by N. Drake) (see above) - Public Domain
Gent, Thomas, 1693-1778
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Hildebrandt, Eduard, 1818-1869
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Rockefeller, John D. (John Davison), 1839-1937
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Conner, Dennis
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Sculpture: :fr:Auguste Carli<br />Photo: Myst - CC BY-SA 3.0
Monticelli, Adolphe, 1824-1886
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anonymous - Public Domain
Lack, Théodore, 1846-1921
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Globetrotter19 - CC BY-SA 3.0
Evliya Çelebi, 1611?-1682?
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Maccoy, Guy C., 1904-1981
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various; University of Oklahoma - Public Domain
Brooks, Stratton D. (Stratton Duluth), 1869-1949