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unknown - Public Domain
Medical Research Council - CC BY 4.0
unknown -
Étienne Bocourt after Charles Reutlinger - Public Domain
Reynolds - Public Domain
Public Domain
Leonz Niederberger - Public Domain
LW77 - Public Domain
Felipamestiza - CC BY-SA 3.0
Eric Koch / Anefo - CC BY-SA 3.0
Bain News Service - Public Domain
Official government photograph of the subject while he was in office. - Public Domain
Peter17 - CC BY-SA 3.0
Wenzl Weis - Public Domain
Cecil W. Stoughton - Public Domain
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Fenton, Frank, 1906-1957
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unknown - Public Domain
Judenkünig, Hans, approximately 1450-1526
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Medical Research Council - CC BY 4.0
Medvedev, Zhores A., 1925-
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unknown -
Deutsch, Otto Erich, 1883-1967
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Étienne Bocourt after Charles Reutlinger - Public Domain
Patin, M. (Henri), 1793-1876
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Freeman, Derek
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Reynolds - Public Domain
Richards, Laura Elizabeth Howe, 1850-1943
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Public Domain
Duke, James Buchanan, 1856-1925
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Leonz Niederberger - Public Domain
Vannutelli, Serafino, 1834-1915
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Abetti, Giorgio, 1882-1982
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Fürstenau, Moritz, 1824-1889
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Wilson, James, 1805-1860
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Haydn, Joseph, 1732-1809
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Lewy, Friederich Heinrich, 1885-1950
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Brown, Sydney M. (Sydney MacGillvary), 1895-1952
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LW77 - Public Domain
Beattie, Peter, 1952-
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Krasilovsky, Alexis
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Felipamestiza - CC BY-SA 3.0
Pardo de Tavera, T. H. (Trinidad Hermenegildo), 1857-1925
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Eric Koch / Anefo - CC BY-SA 3.0
Bladen, Ronald, 1918-1988
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Bain News Service - Public Domain
Marquard, Rube, 1889-1980
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Official government photograph of the subject while he was in office. - Public Domain
Yellowtail, Robert, 1889-1988
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Peter17 - CC BY-SA 3.0
Baca, Elfego, 1864-1945
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Wenzl Weis - Public Domain
Löffler, Bertold, 1874-1960
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unknown - Public Domain
Conway, Thomas, 1735-approximately 1800
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Cecil W. Stoughton - Public Domain
Gubbrud, Archie M., 1910-1987
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Crothers, George Edward, 1870-1957
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Earle, George H. (George Howard), 1856-1928
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Bradbury, William B.
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Haddix, Margaret Peterson.
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Public Domain
Colhoun, John Ewing, 1751-1802