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M. M. Mangasarian - Public Domain
Mathew Brady Levin Corot Handy - Public Domain
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Marie-Alexandre Alophe pour le répertoire dramatique des auteurs contemporains - Public Domain
Carlo Pellegrini - Public Domain
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Phi Mu Alpha Sinfonia Fraternity - Public Domain
Jeremiah van der Eyden - Public Domain
unknown - Public Domain
Adolf Dauthage - Public Domain
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NASA - Public Domain
Ridley, after Holloway - Public Domain
Florida Supercon - CC BY 2.0
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Hildegard Weber - CC BY-SA 3.0
Cahn, Marcelle
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Toyotomi, Hideyoshi, 1536?-1598
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Cevallos, Pedro de, 1715-1778
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Ellis, Sarah Stickney, 1799-1872
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M. M. Mangasarian - Public Domain
Mangasarian, M. M. (Mangasar Mugurditch), 1859-1943
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Mathew Brady Levin Corot Handy - Public Domain
Edmunds, George F. (George Franklin), 1828-1919
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Public Domain
Mawson, Douglas, Sir, 1882-1958
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Nick Thorne - CC BY-SA 3.0
Long, Leonard, 1911-
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original uploader - Public Domain
Walker, Edmund, Sir, 1848-1924
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Marie-Alexandre Alophe pour le répertoire dramatique des auteurs contemporains - Public Domain
Anicet-Bourgeois, M. (Auguste), 1806-1871
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Dijk, Gerrit van, 1938-
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Carlo Pellegrini - Public Domain
Harrowby, Dudley Ryder, Earl of, 1831-1900
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Wishart, George, 1513?-1546
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Anonymous plate - Public Domain
Lelewel, Joachim, 1786-1861
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Johann Dréo - CC BY-SA 2.0
Nobre, Fernando, 1951-
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Phi Mu Alpha Sinfonia Fraternity - Public Domain
Burrell, Percy Jewett
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Song, Qingling, 1893-1981
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Jeremiah van der Eyden - Public Domain
Rutland, Henry Manners, Earl of, 1526-1563
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unknown - Public Domain
Trejo Paniagua, Gabriel
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Adolf Dauthage - Public Domain
Rochleder, Friedrich, 1819-1874
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Panizzi, Anthony, Sir, 1797-1879
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Tinette - CC BY-SA 3.0
Adams, Shelby Lee
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Konrad Jacobs - CC BY-SA 2.0
Hasse, Helmut, 1898-1979
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Butler, Edward Hubert, 1850-1914
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Louvet de Couvray, Jean-Baptiste, 1760-1797
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Tufton, Sackville, -1721
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Public Domain
Bacon, Augustus Octavius, 1839-1914
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NASA - Public Domain
Buchli, James F., 1945-
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Ridley, after Holloway - Public Domain
Lofft, Capel, 1751-1824
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Florida Supercon - CC BY 2.0
Williamson, Fred