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Derconb - CC BY-SA 3.0
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Joel Singer - CC BY-SA 3.0
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Andrew D Hurley - CC BY-SA 2.0
Casiann - CC BY-SA 3.0
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Upton Sinclair - Public Domain
Joseph Buchtel - Public Domain
Promiflash - CC BY-SA 3.0
unknown - Public Domain
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jean-christophe windland - CC BY 3.0
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Derconb - CC BY-SA 3.0
Zabludovsky, Abraham
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Gromov, M. (Mikhail)
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Public Domain
Segato, Girolamo, 1792-1836
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Joel Singer - CC BY-SA 3.0
Broughton, James, 1913-1999
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Public Domain
Kendall, Charles West, 1828-1914
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Harris, Robert, 1830-1894
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Heavysege, Charles, 1816-1876
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Guiteau, Charles J. (Charles Julius), 1841-1882
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Frick, Henry Clay, 1849-1919
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Adams, John, 1947-....
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Eggeling, Viking, 1880-1925
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Andrew D Hurley - CC BY-SA 2.0
Kemp, Martin, 1961-
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Lodge, Edmund, 1756-1839
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Casiann - CC BY-SA 3.0
Natsios, Andrew S.
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White, Kevin H.
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Gerbert, Martin, 1720-1793
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Upton Sinclair - Public Domain
Sinclair, Mary Craig
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Tietze, Heinrich, 1880-1964
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Kirkland, Sally
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Babington, B.G. (Benjamin Guy), 1794-1866
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Joseph Buchtel - Public Domain
Curry, Geo. L. (George Law), 1820-1878
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Bauer, Friedrich Ludwig, 1924-....
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Promiflash - CC BY-SA 3.0
Eden, Barbara, 1934-
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unknown - Public Domain
Mathews, Charles James, 1803-1878
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Remar, James
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Grosvenor, Thomas, Sir, 1655 or 1656-1700
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Fischer, Debra
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Plessis, Joseph-Octave, 1763-1825
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jean-christophe windland - CC BY 3.0
Henry, Pierre, 1927-....
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Price, Bruce, 1845-1903