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No consta -
Public Domain
user at project - CC0 1.0
Unknown historic photographer - Public Domain
unknown - Public Domain
Filson Historical Society - Public Domain
dbking - CC BY 2.0
Cruccone - CC BY 3.0
Unknown - Public Domain
Parvaneh kazemi - CC BY-SA 4.0
Alexander Binder - Public Domain
Medical Research Council - CC BY 4.0
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Hammer, Julius, 1810-1862
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No consta -
Barriobero y Herrán, E. (Eduardo), 1875-1939
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Public Domain
Gottschall, Rudolf von 1823-1909
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Lyons, Richard Bickerton Pemell Lyons, Earl, 1817-1887
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Silliman, Benjamin, 1779-1864
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user at project - CC0 1.0
Cobbe, Charles, 1687-1765
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Unknown historic photographer - Public Domain
Wilson, Edwin H.
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Heckscher, Eli F. (Eli Filip), 1879-1952
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unknown - Public Domain
Boto, António, 1897-1959
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Filson Historical Society - Public Domain
Speed, Joshua F. (Joshua Fry), 1814-1882
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dbking - CC BY 2.0
Cole, Natalie, 1950-....
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Gratry, A. (Auguste), 1805-1872
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Henkel, August, 1880-
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Cruccone - CC BY 3.0
Asensi, Matilde, 1962-....
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Brecht, Bertolt, 1898-1956
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Palmer, Robert, 1949-2003
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Clarke, Edward, Sir, 1841-1931
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Whitney, Newel Kimball, 1795-1850
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Chesnut, James, 1815-1885
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Ridge, Major, approximately 1771-1839
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Obote, A. Milton (Apollo Milton), 1924-2005
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Andronicus II Palaeologus, Emperor of the East, 1260-1332
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Unknown - Public Domain
Guareschi, Giovanni, 1908-1968
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unknown - Public Domain
Scott, Everett, 1892-1960
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Parvaneh kazemi - CC BY-SA 4.0
Hawley, Elizabeth, 1923-
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Boeckh, August, 1785-1867
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Alexander Binder - Public Domain
Dieterle, William, 1893-1972
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Armatrading, Joan
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Bunny, John, 1863-1915
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Medical Research Council - CC BY 4.0
Medvedev, Zhores A., 1925-