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National Academy of Sciences - Public Domain
anonimous - Public Domain
Henry Tanworth Wells - Public Domain
Smithsonian Institution -
Unknown; uploader was John English 9999 - Public Domain
unknown -
unbekannt - entweder der Verlag oder eine Zeitung - Public Domain
Charles Allen Duval - Public Domain
Chiou Hsinhuei - CC BY-SA 4.0
James Akin - Public Domain
John A. Gray, printer (New York). - Public Domain
Agence Rol -
Staff member of the University of Queensland Photography Department - CC BY-SA 4.0
Scanned by user AlphaZeta, photographer unknown - Public Domain
Tsemii - CC BY 3.0
Yesacnosac - CC BY-SA 3.0
Unknown - Public Domain
UK government - Public Domain
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National Academy of Sciences - Public Domain
Giles, Norman H., 1915-2006
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Fregonese, Hugo, 1908-1987
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anonimous - Public Domain
Pescara, Ferdinando Francesco d'Avalos, marchese di, 1489-1525
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Henry Tanworth Wells - Public Domain
Burton, Frederic William, 1816-1900
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Bartók, Éva, 1927-1998
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Smithsonian Institution -
Crosby, Elizabeth Caroline, 1888-....
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Unknown; uploader was John English 9999 - Public Domain
McIntyre, Thomas J., 1915-
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unknown -
Skyrms, Brian
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unbekannt - entweder der Verlag oder eine Zeitung - Public Domain
Edwards, Amelia Ann Blanford, 1831-1892
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Ball, George W.
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Charles Allen Duval - Public Domain
Gibson, Thomas Milner, 1806-1884
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Greenwood, F. W. P. (Francis William Pitt), 1797-1843
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Chiou Hsinhuei - CC BY-SA 4.0
Nara, Yoshitomo, 1959-....
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James Akin - Public Domain
Dexter, Timothy, 1747-1806
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John A. Gray, printer (New York). - Public Domain
Bokee, David A., (David Alexander), 1805-1860
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Beckham, John Crepps Wickliffe, 1869-1940
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Agence Rol -
Sangnier, Marc, 1873-1950
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Staff member of the University of Queensland Photography Department - CC BY-SA 4.0
Hay, John A., 1942-
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Hinton, John Howard, 1791-1873
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Scanned by user AlphaZeta, photographer unknown - Public Domain
Rosen, Georg von, greve, 1843-1923
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Tsemii - CC BY 3.0
Kauffman, Stuart A.
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Undset, Sigrid, 1882-1949
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Yesacnosac - CC BY-SA 3.0
White, B. Joseph
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Unknown - Public Domain
Bose, Subhas Chandra, 1897-1945
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Bewick, Thomas, 1753-1828
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Kilgo, John Carlisle, 1861-1922
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Chladni, Ernst Florens Friedrich, 1756-1827
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Cockrell, Thad
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UK government - Public Domain
Foley, Frank, 1884-1958
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Cobbold, Richard, 1797-1877