Image from Wikimedia Commons
anonymous - Public Domain
Kandinski (Candeira) - CC BY-SA 2.0
Photoplay Magazine Publishing Company. - Public Domain
unknown - Public Domain
Harris & Ewing, photographer - Public Domain
Napoleon Sarony - Public Domain
http://www.gettyimages.com - Public Domain
David McNally - CC BY-SA 4.0
Stephencdickson - CC BY-SA 4.0
Unbekannter Grafiker der Epoche. - Public Domain
W. J. Lucas - Public Domain
Photo copyrighted by Harris & Ewing. Now held by U.S. Copyright Office. - Public Domain
Mathew Brady Levin Corot Handy - Public Domain
Monogram Pictures - Public Domain
Civil War glass negative collection (Library of Congress) - Public Domain
not stated - Public Domain
Image from Wikimedia Commons
anonymous - Public Domain
Prado, Pedro, 1886-1952
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Kitchin, William W. (William Walton), 1866-1924
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Buffon, Georges-Louis Leclerc, comte de, 1707-1788
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Palamas, Kōstēs, 1859-1943
Image from Wikimedia Commons
Kandinski (Candeira) - CC BY-SA 2.0
Winner, Langdon.
Image from Wikimedia Commons
Ellmenreich, Franziska
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Photoplay Magazine Publishing Company. - Public Domain
White, Leo, 1882-1948
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Parr, John, 1725-1791
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Defrees, John D. (John Dougherty), 1810 or 1811-1882
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unknown - Public Domain
Bois, Jules, 1871-1943
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Harris & Ewing, photographer - Public Domain
Tillman, S. E. (Samuel Escue), 1847-1942
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Franz, Robert, 1815-1892
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Napoleon Sarony - Public Domain
Davenport, Edward Loomis, 1815-1877
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http://www.gettyimages.com - Public Domain
Weaver, John V. A. (John Van Alstyne), 1893-1938
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David McNally - CC BY-SA 4.0
McNally, David, 1953-....
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Stephencdickson - CC BY-SA 4.0
Savile, George, Sir, 1726-1784
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Voulgaris, Eugenios, 1716-1806
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Evans, John William 1855-18..?
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Grünbaum, Fritz, 1880-1941
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unknown - Public Domain
Smith, Arthur Donaldson, 1866-1939
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Unbekannter Grafiker der Epoche. - Public Domain
Souvestre, Émile, 1806-1854
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W. J. Lucas - Public Domain
Sharp, David, 1840-1922
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Photo copyrighted by Harris & Ewing. Now held by U.S. Copyright Office. - Public Domain
Delano, Jane A., 1862-1919
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Mathew Brady Levin Corot Handy - Public Domain
Green, Duff, 1791-1875
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Turner, Michael Stanley.
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Monogram Pictures - Public Domain
Toler, Sidney, 1874-1947
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Civil War glass negative collection (Library of Congress) - Public Domain
Rousseau, Lovell Harrison, 1818-1869
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not stated - Public Domain
Laestadius, L. L. (Lars Levi), 1800-1861
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Sherman, Charles Robert, 1788-1829
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Spring Rice, Cecil, Sir, 1859-1918