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Simon James - CC BY-SA 2.0
Shane Lin - CC BY-SA 2.5
unknown - Public Domain
Public Domain
Georges Biard - CC BY-SA 3.0
Nightscream - CC BY 3.0
Frederic William Howay - Public Domain
Michel-georges bernard - CC BY-SA 3.0
Reginald Gray - CC BY-SA 3.0
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Baltimore, Cecil Calvert, Baron, approximately 1605-1675
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Simon James - CC BY-SA 2.0
Stevens, Shakin'
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Bulloch, James Dunwody, 1823-1901
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Marlowe, June, 1903-1984
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Dimitrie Cantemir, Voivode of Moldavia, 1673-1723
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Dossi, Dosso, -1542
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Shane Lin - CC BY-SA 2.5
Martel, Yann
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Goodsir, John, 1814-1867
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unknown - Public Domain
Farley, John M. (John Murphy), 1842-1918
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Public Domain
Featherston, Winfield Scott, 1819-1891
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Cagnola, Luigi, 1762-1833
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Georges Biard - CC BY-SA 3.0
Seigner, Emmanuelle
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Whittredge, Worthington, 1820-1910
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Nightscream - CC BY 3.0
Gould, Emily
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Frederic William Howay - Public Domain
MacDonald, Alexander, 1858-1941
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King, George, 1840-1909
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Michel-georges bernard - CC BY-SA 3.0
Khadda, Mohammed
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Spencer, Baldwin, Sir, 1860-1929
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Bogert, Frank M.
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Leuschner, Armin Otto, 1868-
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Oppenheimer, J. Robert, 1904-1967
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unknown - Public Domain
Yasui, Minoru, 1916-
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Schultens, Albert, 1686-1750
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White, Byron R., 1917-2002
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Brodsky, Joseph, 1940-1996
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Milner, Victor, 1893-1972
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Reginald Gray - CC BY-SA 3.0
Bacon, Francis, 1909-1992
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Comstock, Daniel F. (Daniel Frost), 1883-1970
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Ameghino, Florentino, 1853-1911
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Markham, Violet Rosa