Image from Wikimedia Commons
Charles John Robertson (born 1779?) - Public Domain
unknown, scanned by DenzyMenzy - Public Domain
Amanda Hilliard Smith - Public Domain
unknown - Public Domain
David Shankbone - CC BY-SA 3.0
PH1 Nelson Archey - Public Domain
U.S. Navy - Public Domain
Hpschaefer - CC BY-SA 3.0
University of Bath - Public Domain
Unknown<br><small>〔original uploader - Public Domain
unknown russian pre-revolutionary Photograph - Public Domain
Joseph Gaston - Public Domain
Anonymous, no author disclosure - Public Domain
Coburn, Alvin Langdon, 1882-1966 -- Photographer - Public Domain
Harrison & Coover, Central Music Hall, Chicago - Public Domain
math.info - CC BY-SA 2.5
user at project -
Wm. Notman & Son -
Contemporary engraving - Public Domain
Image from Wikimedia Commons
Charles John Robertson (born 1779?) - Public Domain
Beale, William
Image from Wikimedia Commons
unknown, scanned by DenzyMenzy - Public Domain
Erkin, Ulvi Cemal
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Amanda Hilliard Smith - Public Domain
Frinks, Golden Asro, 1920-2004
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Colville, Alex, 1920-2013
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unknown - Public Domain
Davis, Thomas Aspinwall, 1798-1845
Image from Wikimedia Commons
David Shankbone - CC BY-SA 3.0
Lake, Ricki
Image from Wikimedia Commons
PH1 Nelson Archey - Public Domain
Macapagal, Diosdado, 1910-1997
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U.S. Navy - Public Domain
Lovett, Robert A. (Robert Abercrombie), 1895-1986
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unknown - Public Domain
Geddes, Norman-Bel 1893-1958
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Stossel, Ludwig
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unknown - Public Domain
Sirr, Henry Charles, 1807-1872
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Hpschaefer - CC BY-SA 3.0
Stewart, Paul, 1955-....
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University of Bath - Public Domain
Pitman, James, Sir, 1901-
Image from Wikimedia Commons
Unknown<br><small>〔original uploader - Public Domain
Gerdt, Pavel Andreevich, 1844-1917
Image from Wikimedia Commons
unknown russian pre-revolutionary Photograph - Public Domain
Ippolitov-Ivanov, Mikhail Mikhaĭlovich, 1859-1935
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Joseph Gaston - Public Domain
Skinner, Eugene F., 1809-1864
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Tucker, Albert, 1914-1999
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Avery, William T. (William Tecumsah), 1819-1880
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Anonymous, no author disclosure - Public Domain
Albrecht, Berty, 1893-1943
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unknown - Public Domain
Gossett, Elizabeth Hughes, 1907-1981
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Coburn, Alvin Langdon, 1882-1966 -- Photographer - Public Domain
Scott, Cyril
Image from Wikimedia Commons
Harrison & Coover, Central Music Hall, Chicago - Public Domain
Davenport, Harry, 1866-1949
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Lonicer, Adam, 1528-1586
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math.info - CC BY-SA 2.5
Mandelbrojt, Szolem, 1899-
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user at project -
Fischer, Debra
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Raupach, Ernst Benjamin Salomo, 1784-1852
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Castracani, Castruccio, 1281-1328
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Kaiulani, Princess of Hawaii, 1875-1899
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Wm. Notman & Son -
Abbott, Maude E. (Maude Elizabeth), 1869-1940
Image from Wikimedia Commons
Contemporary engraving - Public Domain
Bedford, Francis Russell, Earl of, 1526 or 1527-1585