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Anonymous - Public Domain
Archives André Ricros - Public Domain
Silpet1 - CC0 1.0
unknown -
Collection of the U.S. House of Representatives, Photography Collection - Public Domain
Joseph S. Diller - Public Domain
:en:United States Court of Appeals for the Ninth Circuit - Public Domain
unknown - Public Domain
Ministério da Cultura - CC BY 2.0
William J. Meuer Photoart Collection - Public Domain
Elena Torre - CC BY-SA 2.0
Photo taken by Dennis Ose, now-deceased MD-PhD student of Irwin Fridovich - CC BY 3.0
National Geographic Society - Public Domain
George Franklyn Willey (apparently) - Public Domain
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Farel, Guillaume, 1489-1565
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Anonymous - Public Domain
Gould, William Benjamin, 1837-1923
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Hazard, Paul, 1878-1944
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Langner, Lawrence, 1890-1962
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Archives André Ricros - Public Domain
Bouscatel, Antonin 1867-1945
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Silpet1 - CC0 1.0
Ebert, Peter, 1918-2012
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Holmes, Larry, 1949-
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Gerling, Christian Ludwig, 1788-1864
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Beerbohm, Max, Sir, 1872-1956
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unknown -
Pastrana Borrero, Misael
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Collection of the U.S. House of Representatives, Photography Collection - Public Domain
Butler, M. Caldwell (Manley Caldwell), 1925-
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Young, Allyn Abbott, 1876-1929
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Cobbold, Richard, 1797-1877
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Mba, Léon, 1902-1967
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Joseph S. Diller - Public Domain
Kümmel, Henry Barnard, 1867-
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Collodi, Carlo, 1826-1890
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:en:United States Court of Appeals for the Ninth Circuit - Public Domain
Bernal, Jesus G., 1963-
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unknown - Public Domain
Watson, Edward H. (Edward Howe), 1873-1942
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Grimm, Ludwig Emil, 1790-1863
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Ministério da Cultura - CC BY 2.0
Nobre, Marlos, 1939-....
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William J. Meuer Photoart Collection - Public Domain
Van Hise, Charles Richard, 1857-1918
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Elena Torre - CC BY-SA 2.0
Vitti, Monica
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Travis, Nick
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Photo taken by Dennis Ose, now-deceased MD-PhD student of Irwin Fridovich - CC BY 3.0
Fridovich, Irwin
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National Geographic Society - Public Domain
Gannett, Samuel S. (Samuel Stinson), 1861-1939
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Ansdell, Richard, 1815-1885
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George Franklyn Willey (apparently) - Public Domain
Moulton, Mace, 1796-1867
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Martin, Jas. S. (James Stewart), 1826-1907
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Ganivet, Ángel, 1865-1898
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Ives, Irving McNeil, 1896-1962