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Teevee - CC BY-SA 3.0
Penarc - CC BY-SA 3.0
file photo, scanned by Tim Davenport - Public Domain
Konrad Jacobs, Erlangen - CC BY-SA 2.0
Scriven, Edward, 1775-1841, printmaker - Public Domain
Mathew Brady - Public Domain
Rob C. Croes (ANEFO) - CC0 1.0
w - Public Domain
Tryingtocutdown - CC BY-SA 4.0
unknown (?self portrait) - Public Domain
Mathew Brady Levin Corot Handy - Public Domain
Photographer unidentified - Public Domain
Rathfelder - CC BY-SA 4.0
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Russell, Stephen M.
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Teevee - CC BY-SA 3.0
Chesnutt, Cody
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Wepper, Fritz
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Penarc - CC BY-SA 3.0
Looser, Gualterio, 1898-1982
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Larrabee, William, 1832-1912
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Vance, Joseph, 1786-1852
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Klinger, Friedrich Maximilian, 1752-1831
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Sands, Matthew L. (Matthew Linzee)
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Whittlesey, Elisha, 1783-1863
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file photo, scanned by Tim Davenport - Public Domain
Untermann, Ernest
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Wilcox, Lisa, 1964-
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Konrad Jacobs, Erlangen - CC BY-SA 2.0
Cohn-Vossen, S. (Stephan), 1902-1936
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Scriven, Edward, 1775-1841, printmaker - Public Domain
Bowdler, John, 1783-1815
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Highmore, Freddie, 1992-....
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Mathew Brady - Public Domain
Loomis, Dwight, 1821-1903
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Rob C. Croes (ANEFO) - CC0 1.0
Bukovskiĭ, Vladimir Konstantinovich, 1942-
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Mayor, Federico
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Corneille, 1922-2010
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w - Public Domain
Stefanik, Elise, 1984-
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Tryingtocutdown - CC BY-SA 4.0
Widen, Gregory.
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unknown (?self portrait) - Public Domain
Boutet, Henri, 1851-1919
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Mathew Brady Levin Corot Handy - Public Domain
Chaffee, Jerome Bunty, 1825-1886
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Giolitti, Giovanni, 1842-1928
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MacGill, Patrick, 1890-1963
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Lafargue, Paul, 1842-1911
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Photographer unidentified - Public Domain
Underwood, Francis Henry, 1825-1894
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Seaver, Fred Jay, 1877-1970
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Rathfelder - CC BY-SA 4.0
Jewell, J.A., 1950-
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Ladmirault, Paul, 1877-1944
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Agnesi, Maria Teresa, 1720-1795