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velox - Public Domain
Unknown (pre-1923 photo) Watson, per the link in the source, left Johns Hopkins in 1921 (on bad terms). This is a photo of him there. - Public Domain
Gaston Vuillier (dessin) d'après une photographie de Michelez - Public Domain
unknown - Public Domain
Dese'Rae L. Stage - CC BY 3.0
Schwenterley sc[ulpsit - Public Domain
DoubleSpeak with Matthew and Peter Slutsky - CC BY-SA 2.0
Rebeca Yanke - CC BY-SA 2.0
Mathew Brady Levin Corot Handy - Public Domain
Pruneau - CC BY-SA 3.0
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Alexander, Grand Duke of Vladimir, 1220-1263
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Kelly, Michael J., 1857-1894
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velox - Public Domain
Swartwout, Egerton, 1870-1943
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Burleson, Omar Truman, 1906-1991
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Unknown (pre-1923 photo) Watson, per the link in the source, left Johns Hopkins in 1921 (on bad terms). This is a photo of him there. - Public Domain
Watson, John B. (John Broadus), 1878-1958
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Béchamp, Antoine, 1816-1908
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Johnson, Guy, approximately 1740-1788
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Nelson, Thomas, 1738-1789
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Gaston Vuillier (dessin) d'après une photographie de Michelez - Public Domain
Gaillard, Ferdinand, 1834-1887
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unknown - Public Domain
Saint-Priest, Alexis Guignard de, comte, 1805-1851
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Dese'Rae L. Stage - CC BY 3.0
Ferrick, Melissa
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Maurokordatos, Alexandros, 1636-1709
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Halm, Friedrich, 1806-1871
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Schwenterley sc[ulpsit - Public Domain
Osiander, Friedrich Benjamin, 1759-1822
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Kamal-ud-Din, Khwaja, 1870-1932
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Boyd, Stephen, 1931-1977
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DoubleSpeak with Matthew and Peter Slutsky - CC BY-SA 2.0
Stowe, Madeleine
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Culberson, David B. (David Browning), 1830-1900
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Rebeca Yanke - CC BY-SA 2.0
Tabucchi, Antonio, 1943-2012
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Blanes, Juan Manuel, 1830-1901
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Cassel, Seymour, 1935-....
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Asafʹev, B. V. (Boris Vladimirovich), 1884-1949
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Galen
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Littmann, Max, 1862-1931
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Mathew Brady Levin Corot Handy - Public Domain
Pomeroy, Theodore Medad, 1824-1905
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Walker, Francis Amasa, 1840-1897
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Konstantin, Leopoldine, 1886-1965
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unknown - Public Domain
Rockwell, Julius, 1805-1888
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Longstaff, John, Sir, 1861-1941
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Pruneau - CC BY-SA 3.0
Smith, Henry John Stephen, 1826-1883