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Unknown -
David Shankbone - CC BY 3.0
Public Domain
unknown - Public Domain
Jmontbarron - CC BY-SA 4.0
Unknown author. Added by: Kargul1965 - Public Domain
Photographer unknown (possible self-portrait by Grove) - Public Domain
Mdfrancois -
Mercury Artists Corp., New York - Public Domain
Le Lieure Phot Editeur - Public Domain
Medical Research Council - CC BY 4.0
Photojunkie - Public Domain
Arnold Genthe - Public Domain
Georg Brokesch - Public Domain
D. Alexander Stuart - CC BY-SA 4.0
*:File:Ravitch.JPG - CC BY 3.0
John B. Root - CC BY-SA 4.0
Roferbia - CC BY-SA 4.0
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Unknown -
Mombert, Alfred, 1872-1942
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Woodhead, G. Sims (German Sims), 1855-1921
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David Shankbone - CC BY 3.0
Martin, Darnell
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Dodd, Claire, 1908-1973
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Public Domain
Ryan, Thomas, 1837-1914
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unknown - Public Domain
Encke, Johann Franz, 1791-1865
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Public Domain
Hanna, Augusta Rhodes, 1842?-1921
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Jmontbarron - CC BY-SA 4.0
Barron, Jeannette Montgomery, 1956-
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Public Domain
Nitti, Francesco Saverio, 1868-1953
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Unknown author. Added by: Kargul1965 - Public Domain
Wangerin, A. (Albert), 1844-1933
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Sawyer, Frederick Adolphus, 1822-1891
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Scott, Mike, 1958-
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Photographer unknown (possible self-portrait by Grove) - Public Domain
Grove, Frederick Philip, 1879-1948
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Public Domain
Brooks, Noah, 1830-1903
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Pease, Alfred E. (Alfred Edward), Sir, 1857-1939
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Mdfrancois -
Francois, Francis B.
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Draper, William H. (William Henry), 1894-1974
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Mercury Artists Corp., New York - Public Domain
Gilbert, Billy, 1893-1971
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Vehanen, Kosti, 1887-1957
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Le Lieure Phot Editeur - Public Domain
Ferni, Carolina, 1839-1926
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Medical Research Council - CC BY 4.0
Medvedev, Zhores A., 1925-
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Photojunkie - Public Domain
Rooney, Art, 1901-1988
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Arnold Genthe - Public Domain
Teasdale, Sara, 1884-1933
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Georg Brokesch - Public Domain
Klengel, Julius, 1859-1933
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D. Alexander Stuart - CC BY-SA 4.0
Kerouac, Jan, 1952-....
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unknown - Public Domain
Shackelford, James M. (James Murrell), 1827-1907
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*:File:Ravitch.JPG - CC BY 3.0
Ravitch, Richard, 1933-
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John B. Root - CC BY-SA 4.0
Bach, Karen 1973-2005
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Roferbia - CC BY-SA 4.0
Wolff, Egon, 1926-....
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Carey, Mathew, 1760-1839