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unknown - Public Domain
unknown -
AgnosticPreachersKid - CC BY-SA 3.0
Carlo Pellegrini - Public Domain
Martín Tovar y Tovar (1827 - 1902) - Public Domain
family member -
Gage Skidmore - CC BY-SA 3.0
Interaction-Design.org - CC BY-SA 2.0
Illegible - 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
Mike Cline - Public Domain
North Carolina Department of Cultural Resources, North Carolina Historical Marker Program - CC0 1.0
Public Domain
CBS (Columbia Broadcasting System) Radio - Public Domain
original uploader - Public Domain
Not stated - Public Domain
Image from Wikimedia Commons
Dickey, John Sloan, 1907-1991
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unknown - Public Domain
Pálffy, Fidél 1895-1946
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unknown - Public Domain
Hill, Pete, 1880-1951
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unknown -
Stretton, Hesba, 1832-1911
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AgnosticPreachersKid - CC BY-SA 3.0
American Red Cross
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Kinkead, Eugene F. (Eugene Francis), 1876-1960
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Carlo Pellegrini - Public Domain
Edis, Robert W. (Robert William), 1839-1927
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Martín Tovar y Tovar (1827 - 1902) - Public Domain
Mariño, Santiago, 1788-1854
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Clements, Vassar
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family member -
Ayres, A. Jean.
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Spaak, Paul-Henri, 1899-1972
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unknown - Public Domain
Yamamoto, Tsunetomo, 1659-1719
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Clarke, J. Erskine (John Erskine), 1827-1920
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Onslow, Georges
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Dean, James, 1931-1955
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Brønsted, J. N. (Johannes Nicolaus), 1879-1947
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Gage Skidmore - CC BY-SA 3.0
Lisberger, Steven
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González de Santalla, Tirso, 1624-1705
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Norblin, Louis-Pierre-Martin, 1781-1854
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Interaction-Design.org - CC BY-SA 2.0
Gardner, Howard, 1943-....
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Illegible - Public Domain
Langlois, E.-H. (Eustache-Hyacinthe), 1777-1837
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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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Mike Cline - Public Domain
Stanford, Jane Lathrop, 1828-1905
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Abercromby, Ralph, Sir, 1734-1801
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unknown - Public Domain
Le Moyne de la Borderie, Arthur 1827-1901
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North Carolina Department of Cultural Resources, North Carolina Historical Marker Program - CC0 1.0
Sharpe, William, 1742-1818
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Public Domain
Gallone, Carmine, 1886-1973
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CBS (Columbia Broadcasting System) Radio - Public Domain
Warnow, Mark
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original uploader - Public Domain
George, Henry, 1862-1916
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Not stated - Public Domain
Holder, Charles Frederick, 1851-1915