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unknown - Public Domain
USG - Public Domain
Everts & Fariss (Philadelphia), publishers. - Public Domain
:de:Benutzer:Amrei-Marie - CC BY-SA 3.0
Public Domain
US Government Printing Office - Public Domain
Orderinchaos - CC BY-SA 3.0
http://history-computer.com/ - Public Domain
anonymous - Public Domain
Mathew Brady Levin Corot Handy - Public Domain
MGM Studios - Public Domain
Derconb - CC BY-SA 3.0
Larabezo - CC BY-SA 4.0
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Patterson, Boyd Crumrine, 1902-
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Hervey, A.C. (Arthur Charles), 1808-1894
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unknown - Public Domain
Preyer, William T., 1841-1897
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Hinson, Ashley, 1983-
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USG - Public Domain
Letterman, Jonathan, 1824-1872
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Everts & Fariss (Philadelphia), publishers. - Public Domain
Prentiss, John Holmes, 1784-1861
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Boethius, -524
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:de:Benutzer:Amrei-Marie - CC BY-SA 3.0
Lebert, Benjamin, 1982-
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Public Domain
Abba, Marta.
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Scudéry, Madeleine de, 1607-1701
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US Government Printing Office - Public Domain
Trimble, James W. (James William), 1894-1972
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Birkenhead, Frederick Edwin Smith, earl of, 1872-1930
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Benn, Gottfried, 1886-1956
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Orderinchaos - CC BY-SA 3.0
Battye, J. S. (James Sykes), 1871-
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Costa Méndez, Nicanor, 1921-1992
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Ricci, Ruggiero, 1918-2012
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Payne, John, 1912-1989
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Hayden, Melissa
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Drake, Heinrich
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Mao, Dun, 1896-1981
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Kameny, Frank, 1925-2011
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http://history-computer.com/ - Public Domain
Flowers, T. H. (Thomas Harold), 1905-1998
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anonymous - Public Domain
Hotchkiss, B. B. (Benjamin Berkeley), 1826-1885
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Mathew Brady Levin Corot Handy - Public Domain
Knott, J. Proctor (James Proctor), 1830-1911
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MGM Studios - Public Domain
Powell, Jane, 1929-....
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Derconb - CC BY-SA 3.0
Zabludovsky, Abraham
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Vicente, Gil, approximately 1470-approximately 1536
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Trosch, Robert
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unknown - Public Domain
Graf, Arturo, 1848-1913
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Larabezo - CC BY-SA 4.0
Pogorelich, Ivo, 1958-....