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James Presley Ball (1825-1904) - Public Domain
w:en:Revue_Studios#Revue_Studios - Public Domain
Saddhiyama - Public Domain
C. V. Buck - Public Domain
Lucius E. Chittenden - Public Domain
See signature - Public Domain
State of Louisiana. - Public Domain
DamianPettigrew - CC BY-SA 3.0
narcisoyepes.org - Public Domain
unknown - Public Domain
Sheila Murphy, LLC - CC BY 3.0
Pierre Petit (1832 – 1909) - Public Domain
The w:Bureau of Engraving and Printing - CC BY-SA 3.0
Dipz99 - CC BY-SA 3.0
unknown photographer - Public Domain
William Percy - Public Domain
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James Presley Ball (1825-1904) - Public Domain
Mantle, Lee, 1851-1934
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w:en:Revue_Studios#Revue_Studios - Public Domain
Burns, Michael, 1947-....
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Saddhiyama - Public Domain
Ewald, Carl, 1856-1908
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C. V. Buck - Public Domain
Gallinger, Jacob H. (Jacob Harold), 1837-1918
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Lucius E. Chittenden - Public Domain
Chittenden, L. E. (Lucius Eugene), 1824-1900
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Vulcanius, Bonaventura, 1538-1614
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See signature - Public Domain
Kennicott, Robert, 1835-1866
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State of Louisiana. - Public Domain
Leche, Richard W. (Richard Webster), 1898-1965
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Wilson, C. Rivers (Charles Rivers), 1831-1916
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DamianPettigrew - CC BY-SA 3.0
Balthus, 1908-2001
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narcisoyepes.org - Public Domain
Yepes, Narciso
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Hyvernat, Henri, 1858-1941
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Luther, Katharina von Bora, 1499-1552
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Borchardt, Carl Wilhelm, 1817-1880
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Szent-Györgyi, Albert, 1893-1986
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unknown - Public Domain
Stockton, Richard, 1764-1828
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unknown - Public Domain
Jesenská, Milena, 1896-1944
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Sheila Murphy, LLC - CC BY 3.0
Murphy, Sheila E., 1951-
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Orton, Job, 1717-1783
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Pierre Petit (1832 – 1909) - Public Domain
Lecocq, Alexandre Charles
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The w:Bureau of Engraving and Printing - CC BY-SA 3.0
Burnes, James Nelson, 1827-1889
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Farinelli, 1705-1782
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Cézanne, Paul, 1839-1906
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Dipz99 - CC BY-SA 3.0
Correa, Charles, 1930-....
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Schjellerup, H. C. F. C., 1827-1887
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unknown - Public Domain
White, William Henry, 1845-1913
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unknown photographer - Public Domain
Canniff, William, 1830-1910
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William Percy - Public Domain
Waugh, Edwin, 1817-1890
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Ramsey, Norman, 1915-2011
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Schottky, Walter, 1886-1976