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anonymous - Public Domain
Matthew Blair - CC0 1.0
Mutual Broadcasting System - Public Domain
Gerritt Schipper - Public Domain
Mathew Brady Levin Corot Handy - Public Domain
王铎 - Public Domain
Herbert Abrams - CC BY-SA 3.0
Published in a book by Guy Thorne but artist unattributed - Public Domain
Carl Arnold Friedrich Lafontaine - Public Domain
R. Wernicke - Public Domain
zeitgenössischer Stecher, um 1840 - Public Domain
Jmabel - CC BY-SA 3.0
unknown - Public Domain
Public Domain
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anonymous - Public Domain
Ditrichstein, Leo, 1865-1928
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Nahoum, Haïm, 1872-1960
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Matthew Blair - CC0 1.0
Winslow, Octavius, -1878
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Henize, Karl Gordon, 1926-
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Peckham, Rufus Wheeler, 1838-1909
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Mutual Broadcasting System - Public Domain
Wismer, Harry
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Gerritt Schipper - Public Domain
Richardson, John, 1755?-1831
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Mathew Brady Levin Corot Handy - Public Domain
Covode, John, 1808-1871
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王铎 - Public Domain
Wang, Duo, 1592-1652
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Kassila, Matti, 1924-
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Herbert Abrams - CC BY-SA 3.0
Abrams, Herbert L.
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Forster, Johann Reinhold, 1729-1798
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Chalif, Louis H. (Louis Harvy), 1876-1948
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Ernst, Adolfo, 1832-1899
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Cummings, Amos J. (Amos Jay), 1841-1902
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Published in a book by Guy Thorne but artist unattributed - Public Domain
Charrington, Fredk. N. (Frederick Nicholas), 1850-1936
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Bechtolsheim, Andy
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Green, Richard R., 1936-1989
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Boyd, Stephen, 1931-1977
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Carl Arnold Friedrich Lafontaine - Public Domain
Michaelis, Johann David, 1717-1791
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R. Wernicke - Public Domain
Berger, Wilhelm, 1861-1911
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zeitgenössischer Stecher, um 1840 - Public Domain
Polidori, Paolo
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Jmabel - CC BY-SA 3.0
Shimomura, Roger, 1939-...
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unknown - Public Domain
Huth, Georg, 1867-1906
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Reines, Frederick, 1918-1998
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unknown - Public Domain
Fawcett, Benjamin, 1808-1893
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Collins, Martha, 1940-
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Public Domain
Dickinson, Donald McDonald, 1846-1917
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Isoir, André
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Hulst, George D.