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Civil War glass negative collection (Library of Congress) - Public Domain
unknown - Public Domain
see here for details: http://digitalgallery.nypl.org/nypldigital/id?1169097 - Public Domain
Amrhelweh - CC BY-SA 4.0
Public Domain
Unattributed engraving - Public Domain
forallofus - CC BY-SA 2.0
Todd Wickersty - CC BY-SA 2.0
unknown - CC BY-SA 4.0
Bibliotheca Alexandrina -
PHILDIC - Public Domain
Image from Wikimedia Commons
Civil War glass negative collection (Library of Congress) - Public Domain
Devin, Thomas Casimer, 1822-1878
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unknown - Public Domain
Blackwall, John, 1790-1881
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see here for details: http://digitalgallery.nypl.org/nypldigital/id?1169097 - Public Domain
Giuliani, Mauro, 1781-1829
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Amrhelweh - CC BY-SA 4.0
Séth, Vikram, 1952-
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unknown - Public Domain
Braga, Francisco, 1868-1945
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Public Domain
Lear, Ben, 1879-1966
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Smith, Harry Bache, 1860-1936
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Maturana, Humberto R., 1928-....
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Unattributed engraving - Public Domain
Edwards, William H. (William Henry), 1822-1909
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forallofus - CC BY-SA 2.0
Coyote, Peter
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Crocker, William H. (William Henry)
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Todd Wickersty - CC BY-SA 2.0
Herring, Jimmy
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Wordsworth, Dorothy, 1771-1855
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Anne, of Cleves, Queen, consort of Henry VIII, King of England, 1515-1557
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Lumholtz, Carl, 1851-1922
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Wall, Ricardo, 1694-1777
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Fath, Jacques, 1912-1954
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Rauzzini, Venanzio, 1746-1810
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Lepkyĭ, Bohdan, 1872-1941
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Holmès, Augusta Mary Anne, 1847-1903
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La Rochefoucauld, François, duc de, 1765-1848
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Schweitzer, Albert
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Martin, Edward, 1879-1967
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Public Domain
Lonergan, Augustine, 1874-1947
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unknown - CC BY-SA 4.0
Meyer, Hannes, 1889-1954
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Bibliotheca Alexandrina -
Fawzi, Mahmoud
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PHILDIC - Public Domain
Chintreuil, Antoine, 1814-1873
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Kirke, Percy, 1646?-1691
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unknown - Public Domain
Perry, Mr. (William Hayne), 1839-1902
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Chladni, Ernst Florens Friedrich, 1756-1827