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:Jmabel - CC BY 3.0
unknown - Public Domain
James Abbe (picture credit) - Public Domain
unknown photographer - Public Domain
Rudolf Ganz - Public Domain
Godfrey Kneller -
Masao Nakagami - CC BY-SA 2.0
Smithsonian Institution - Public Domain
John B. Horner - Public Domain
Louis Abel Beffroy de Reigny (1757-1811) - Public Domain
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Michel, Robert H., 1923-
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Prince, Thomas, 1687-1758
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Penn, William, 1644-1718
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Dalton, Dorothy, 1893-1972
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Hyde, Douglas, 1860-1949
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Verrocchio, Andrea del, 1435?-1488
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:Jmabel - CC BY 3.0
Heat-Moon, William Least
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Gutiérrez Solana, José, 1886-1945
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Breslau, Louise, 1856-1927
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Schröter, Johann Hieronymus, 1745-1816
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unknown - Public Domain
Smith, Addison T. (Addison Taylor), 1862-1956
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Feuerbach, Ludwig, 1804-1872
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James Abbe (picture credit) - Public Domain
Winwood, Estelle, 1883-1984
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unknown photographer - Public Domain
Kock, Karin, 1891-1976
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Rudolf Ganz - Public Domain
Koller, Rudolf, 1828-1905
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Godfrey Kneller -
Monnoyer, Jean Baptiste, approximately 1636-1699
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unknown - Public Domain
Mortillet, Gabriel de 1821-1898
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Thicknesse, Ann, 1737-1824
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Masao Nakagami - CC BY-SA 2.0
Budd, Harold
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Thomson, Roy Herbert, active 1942-1951, 1st Baron Thomson of Fleet
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Landa, Daniel
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Smithsonian Institution - Public Domain
Groll, Albert Lorey, 1866-
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Carpenter, Stephen R.
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John B. Horner - Public Domain
Thayer, W. W. (William Wallace), 1827-1899
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Williams, Henry, 1792-1867
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Negri, Pola, 1899-1987
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unknown - Public Domain
Ulʹi︠a︡nov, Aleksandr, 1866-1887
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Duval-Carrié, Edouard, 1954-
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Pitcairn, John, 1841-1916
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Louis Abel Beffroy de Reigny (1757-1811) - Public Domain
Beffroy de Reigny, L.-A. (Louis-Abel), 1757-1811