Image from Wikimedia Commons
Pascal Ferro - CC BY-SA 3.0
Grr - CC BY 3.0
Robert Bruce Livingston - Public Domain
unknown - Public Domain
John Clark Rand - Public Domain
Unknown photographer of the Signal Corps - Public Domain
Brianweedster - Public Domain
Tim Ross - Public Domain
Catriona Sparks - CC BY 2.0
Elliott & Fry - Public Domain
George Grantham Bain Collection (Library of Congress) - Public Domain
Public Domain
Asensio-Rojas-.Biblioteca Nacional de España - CC BY-SA 4.0
F.T. Stuart (1837-1913), Boston. - Public Domain
Nadar - Public Domain
*:File:Lincoln_Andrews_2.jpg - Public Domain
James Tassie - Public Domain
an unknown Mormon Missionnary - Public Domain
photo was taken by subject's wife (Patricia Targ) - Public Domain
Juhan Sonin -
Image from Wikimedia Commons
Pascal Ferro - CC BY-SA 3.0
Calle, Sophie
Image from Wikimedia Commons
Grr - CC BY 3.0
Stuart, David, 1965-....
Image from Wikimedia Commons
Golovin, Aleksandr I︠A︡kovlevich, 1863-1930
Image from Wikimedia Commons
Robert Bruce Livingston - Public Domain
Gonzalez, Matt, 1965-
Image from Wikimedia Commons
unknown - Public Domain
Richardson, Ernest Cushing, 1860-1939
Image from Wikimedia Commons
Macomb, Alexander, 1782-1841
Image from Wikimedia Commons
John Clark Rand - Public Domain
Jordan, Eben D.
Image from Wikimedia Commons
Unknown photographer of the Signal Corps - Public Domain
Whaling, William J. (William John), 1894-1989
Image from Wikimedia Commons
unknown - Public Domain
Ellicott, John, 1706-1772
Image from Wikimedia Commons
Brianweedster - Public Domain
Nichol, Francis D. (Francis David), 1897-1966
Image from Wikimedia Commons
Tim Ross - Public Domain
Burch, J. B. (John Bayard), 1929-
Image from Wikimedia Commons
Catriona Sparks - CC BY 2.0
Dedman, Stephen
Image from Wikimedia Commons
Elliott & Fry - Public Domain
Waterhouse, Alfred, 1830-1905
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unknown - Public Domain
Munsell, A. H. (Albert Henry), 1858-1918
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Abingdon, James Bertie, Earl of, 1653-1699
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George Grantham Bain Collection (Library of Congress) - Public Domain
Diaghilev, Serge, 1872-1929
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Public Domain
Karlin, Alma Maximiliana, 1889-1950
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Asensio-Rojas-.Biblioteca Nacional de España - CC BY-SA 4.0
Arjona y Cubas, Manuel María de 1771-1820
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Holt, Thomas, Sir, 1570 or 1571-1654
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F.T. Stuart (1837-1913), Boston. - Public Domain
Smith, William Stephens, 1755-1816
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Marochetti, Carlo (Pietro Carlo Giovanni Battista), Baron, 1805-1867
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Lewis, Lawrence, 1879-1943
Image from Wikimedia Commons
Nadar - Public Domain
Geffroy, Gustave, 1855-1926
Image from Wikimedia Commons
*:File:Lincoln_Andrews_2.jpg - Public Domain
Andrews, Lincoln C. (Lincoln Clarke), 1867-1950
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James Tassie - Public Domain
Raspe, Rudolf Erich, 1737-1794
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unknown - Public Domain
Salvin, Osbert, 1835-1898
Image from Wikimedia Commons
an unknown Mormon Missionnary - Public Domain
Crazy Horse, approximately 1842-1877
Image from Wikimedia Commons
photo was taken by subject's wife (Patricia Targ) - Public Domain
Targ, Russell.
Image from Wikimedia Commons
Freyre, Gilberto, 1900-1987
Image from Wikimedia Commons
Juhan Sonin -
Topol, Eric J., 1954-....