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Werner & Son - Public Domain
IlyaV - CC BY-SA 3.0
Public Domain
itsik64 - CC BY 2.0
Eofir2013 - CC BY-SA 3.0
Gibi Savini - CC BY-SA 4.0
F. Cutekuist - Public Domain
Ondřej Němec - CC BY-SA 4.0
John Smibert - Public Domain
unknown - Public Domain
Aidayton - CC BY-SA 3.0
unknown (crop by Abebenjoe - Public Domain
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Werner & Son - Public Domain
Salmon, George, 1819-1904
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Bakunin, Mikhail Aleksandrovich, 1814-1876
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IlyaV - CC BY-SA 3.0
Gofman, John W.
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Public Domain
Brown, Hank, 1940-
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itsik64 - CC BY 2.0
Einstein, Arik
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Eofir2013 - CC BY-SA 3.0
Gallant, Mavis
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Landseer, Thomas, 1795-1880
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Gibi Savini - CC BY-SA 4.0
Lauri-Volpi, Giacomo, 1892-1979
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Krzyżanowski, Konrad, 1872-1922
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Public Domain
Nakahama, Manjirō, 1827-1898
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Bassano, Francesco da Ponte, 1549-1592
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F. Cutekuist - Public Domain
Watson, John Crittenden, 1842-1923
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Jolly, Ph. von (Philipp), 1809-1884
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Ondřej Němec - CC BY-SA 4.0
Havlová, Olga, 1933-1996
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Long, Crawford Williamson, 1815-1878
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John Smibert - Public Domain
Faneuil, Peter, 1700-1743
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Edwards, Edwin, 1823-1879
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unknown - Public Domain
Alegre, Francisco Javier, 1729-1788
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Heard, J. C. (James Charles), 1917-1988
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unknown - Public Domain
Railton, Herbert, 1857-1910
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Glenn, Scott, 1942-
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unknown - Public Domain
McCord, Myron H. (Myron Hawley), 1840-1908
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Robb, James, 1895-1968
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Aidayton - CC BY-SA 3.0
Welsh, Herbert, 1851-1941
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Paterson, A.B. (Andrew Barton), 1864-1941
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Stirling, Robert, 1790-1878
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Cotes, Roger, 1682-1716
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unknown (crop by Abebenjoe - Public Domain
Coldwell, M. J. (Major James), 1888-1974
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Vaughan, Herbert, 1832-1903
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Liljefors, Bruno Andréas, 1860-1939