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Self-portrait - CC BY-SA 3.0
Cory Doctorow - CC BY-SA 2.0
Toglenn - CC BY-SA 3.0
unknown - Public Domain
William Salter - Public Domain
J. J. Cade - Public Domain
NASA - Public Domain
unknown - CC BY-SA 4.0
Jan (John) Vandergucht - Public Domain
Uncredited Bain News Service photographer. - Public Domain
US Congress Joint Cmte on Printing - Public Domain
grgbrwn - CC BY 2.0
TOUATI myriam - CC BY-SA 3.0
Mathew Brady - Public Domain
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Self-portrait - CC BY-SA 3.0
Deitch, Gene
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Bridges, William B., 1934-
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Vossius, Isaac, 1618-1689
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Winter, Johnny
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Cory Doctorow - CC BY-SA 2.0
Pinkwater, Daniel Manus, 1941-
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Inglefield, E. A. (Edward Augustus), 1820-1894
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Gow, Andrew Carrick 1848-1920
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Toglenn - CC BY-SA 3.0
Stagliano, John 1951-....
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Haxthausen, August, Freiherr von, 1792-1866
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Rivarol, Antoine, 1753-1801
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Carlisle, Una Mae, 1915-1956
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Griffin, Samuel, 1746-1810
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unknown - Public Domain
Koninck, L. G. de (Laurent Guillaume), 1809-1887
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Hubbard, Gurdon Saltonstall, 1802-1886
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William Salter - Public Domain
Elphinstone, William George Keith, 1782-1842
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Wrangel, Carl Gustaf, 1613-1676
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J. J. Cade - Public Domain
Spooner, John C. (John Coit), 1843-1919
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NASA - Public Domain
Wright, William Hammond, 1871-1959
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unknown - CC BY-SA 4.0
Blum, Peter, 1925-1990
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Jan (John) Vandergucht - Public Domain
Dennis, John, 1657-1734
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Bimboni, Alberto
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Taylor, John, 1580-1653
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Spalding, A. G. (Albert Goodwill)
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Browne, Edward Granville, 1862-1926
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Uncredited Bain News Service photographer. - Public Domain
Baker, Ray Stannard, 1870-1946
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US Congress Joint Cmte on Printing - Public Domain
Schmitz, John G., 1930-
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grgbrwn - CC BY 2.0
Anderson, Sparky, 1934-2010
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TOUATI myriam - CC BY-SA 3.0
Monteil, Claudine.
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Gualtieri di Brienne, duca di Atene, -1356
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Mathew Brady - Public Domain
Lieber, Francis, 1800-1872