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Illustration from ''Harper's Monthly'', vol. 44, 1872. - Public Domain
Unknown - Public Domain
Heidi Lehwalder - CC BY-SA 4.0
National Coalition Against Censorship -
Anonymous - Public Domain
Artist unidentified - Public Domain
L B Walford - Public Domain
team art in berlin - CC BY-SA 2.0
Kittybrewster - CC BY-SA 3.0
Asensio-Rojas-.Biblioteca Nacional de España - CC BY-SA 4.0
Civil War glass negative collection (Library of Congress) - Public Domain
Colmer, Montagu, and Charles Erskine Scott Wood - Public Domain
McClees & Beck, Washington, D.C, publishers. Julian Vannerson, photographer. - Public Domain
unknown - Public Domain
original uploader - Public Domain
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Hare, Mr. (Silas), 1827-1907
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Illustration from ''Harper's Monthly'', vol. 44, 1872. - Public Domain
Salt, Titus, Sir, 1803-1876
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Morton, F.L. (Frederick Lee), 1949-
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Unknown - Public Domain
Holloway, James L., 1922-
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Heidi Lehwalder - CC BY-SA 4.0
Salzedo, Carlos
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Sutherland, George, 1862-1942
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National Coalition Against Censorship -
Heins, Marjorie
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Anonymous - Public Domain
Anthony, George Tobey, 1824-1896
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Artist unidentified - Public Domain
Willson, Forceythe, 1837-1867
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Rathenau, Walther, 1867-1922
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Brosnan, Jim
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L B Walford - Public Domain
Walford, Lucy Bethia, 1845-1915
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Cameron, David, 1966 October 9-
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team art in berlin - CC BY-SA 2.0
Goldin, Nan, 1953-....
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Holt, Kimberly Willis
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Kittybrewster - CC BY-SA 3.0
Arbuthnot, Alexander J. (Alexander John), Sir, 1822-1907
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Asensio-Rojas-.Biblioteca Nacional de España - CC BY-SA 4.0
Arjona y Cubas, Manuel María de 1771-1820
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Civil War glass negative collection (Library of Congress) - Public Domain
Taylor, Walter Herron, 1838-1916
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Disney, Wesley E. (Wesley Ernest), 1883-1961
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Zuccaro, Federico, approximately 1540-1609
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Marcel, Alexandre, 1860-1928
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Colmer, Montagu, and Charles Erskine Scott Wood - Public Domain
McBride, Thomas A. (Thomas Allen), 1847-1930
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Mayr, Simon, 1763-1845
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Ventriglia, Franco.
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McClees & Beck, Washington, D.C, publishers. Julian Vannerson, photographer. - Public Domain
Bennett, Henry, 1808-1868
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unknown - Public Domain
Kuntze, Otto, 1843-1907
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Tuttle, Julia, 1849-1898
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original uploader - Public Domain
Loschmidt, J. (Johann Josef), 1821-1895
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Bulfinch, Charles, 1763-1844
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Smith, William, 1727-1803