Image from Wikimedia Commons
Life magazine - Public Domain
Oxford Clinical Trials Research Unit - CC BY-SA 4.0
François Stuerhelt - Public Domain
John Bradford Moore - Public Domain
Tangopaso - Public Domain
Willis Kent Productions - Public Domain
Warner Bros. - Public Domain
unknown - Public Domain
Pip R. Lagenta - CC BY 2.0
:nl:Ricochet - CC BY-SA 3.0
Enrico Guastaldi -
unknown -
Public Domain
Carl Wilhelm Bender [http://www.sil.si.edu/digitalcollections/hst/scientific-identity/CF/display_results.cfm?alpha_sort=s] - Public Domain
United States Navy - Public Domain
Engraved by C. Cook from a drawing by Maurir[http://ihm.nlm.nih.gov/images/B04579] - Public Domain
Daniel Shen - CC BY-SA 2.0
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Life magazine - Public Domain
D'Arcy, William Knox, 1849-1917
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Oxford Clinical Trials Research Unit - CC BY-SA 4.0
Altman, Douglas G.
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François Stuerhelt - Public Domain
Bodin, Jean, 1530-1596
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Cahen, Albert, 1846-1903
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John Bradford Moore - Public Domain
Moore, J. B. (John Bradford), 1855-
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Bennett, Floyd, 1890-1928
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Tangopaso - Public Domain
Seigner, Louis
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Willis Kent Productions - Public Domain
Page, Paul, 1903-1974
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Warner Bros. - Public Domain
Hovey, Ann, 1911-2007
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unknown - Public Domain
Dorchester, Guy Carleton, Baron, 1724-1808
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Hartig, Theodor, 1805-1880
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Winckel, F. (Franz), 1837-1912
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Pip R. Lagenta - CC BY 2.0
Van Vogt, A.E. (Alfred Elton), 1912-2000
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:nl:Ricochet - CC BY-SA 3.0
Mathieu, Mireille, 1946-....
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Enrico Guastaldi -
Pinsuti, Ciro, 1829-1888
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unknown - Public Domain
Rodbell, Martin, 1925-1998
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unknown -
Aldrich, John Merton, 1866-1934
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Beaurepaire, Frank, Sir, 1891-1956
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Smith, John Henry, 1848-1911
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Public Domain
Fay, Charles Ernest, 1846-1931
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Holley, Robert W.
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Carl Wilhelm Bender [http://www.sil.si.edu/digitalcollections/hst/scientific-identity/CF/display_results.cfm?alpha_sort=s] - Public Domain
Soemmerring, Samuel Thomas von, 1755-1830
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United States Navy - Public Domain
Ingram, Jonas H. (Jonas Howard), 1886-1952
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Gignoux, Régis 1816-1882
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Grimaldi, Jerónimo Marques de, 1720-1786.
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Hasenohrl, Friedrich
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Engraved by C. Cook from a drawing by Maurir[http://ihm.nlm.nih.gov/images/B04579] - Public Domain
Chevreul, M. E. (Michel Eugène), 1786-1889
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Anderson, Pink, 1900-1974
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Prieur-Duvernois, Claude Antoine, 1763-1832
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Daniel Shen - CC BY-SA 2.0
Romano, Aldo, 1941-....