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unknown - Public Domain
Bain - Public Domain
Harris & Ewing - Public Domain
unknown -
Doig Family - CC BY-SA 4.0
Martin Kraft - CC BY-SA 3.0
www.robertaitken.net, Original uploader was Dr8 - Public Domain
Fran6fran6 - Public Domain
Georg Meisenbach (1841 – 1912) - Public Domain
w:Alberto Korda - Public Domain
http://dph-foundation.web.officelive.com/TrueDetective.aspx - Public Domain
Pencil drawing by Edward Bird (1772–1819) - CC BY 4.0
http://50.asc.upenn.edu - CC0 1.0
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unknown - Public Domain
Larrazolo, Octaviano, 1859-1930
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Bain - Public Domain
Crane, William H., 1845-1928
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Harris & Ewing - Public Domain
Murphy, Frank, 1890-1949
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Grandi, Dino, 1895-1988
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Bache, Richard, 1737-1811
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unknown -
Espín Guillois, Vilma 1930-2007
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Anderson, Sherwood, 1876-1941
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Bevin, Ernest, 1881-1951
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Doig Family - CC BY-SA 4.0
Doig, Ivan
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Klusák, Jan
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Lagarde, Paul de 1827-1891
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Baring, Francis Thornhill, Sir, 1796-1866
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Martin Kraft - CC BY-SA 3.0
Holland, Agnieszka, 1948-....
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www.robertaitken.net, Original uploader was Dr8 - Public Domain
Aitken, Robert Grant, 1864-1951
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Fran6fran6 - Public Domain
Denis, Léon, 1846-1927
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Fall, Albert B. (Albert Bacon), 1861-1944
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Georg Meisenbach (1841 – 1912) - Public Domain
Glasier, J. Bruce (John Bruce), 1859-1920
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Sanders, Morgan Gurley, 1878-1956
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Vanderlip, Frank A. (Frank Arthur), 1864-1937
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unknown - Public Domain
Graef, Botho, 1857-1917
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Moore, Harold G., 1922-....
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w:Alberto Korda - Public Domain
Korda, Alberto, 1928-2001
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unknown -
Boeke, Kees, 1884-1966
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http://dph-foundation.web.officelive.com/TrueDetective.aspx - Public Domain
Powers, Harry
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Hare, Thomas, 1806-1891
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Grimaldi, Giovanni Francesco, 1606-1680
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Pencil drawing by Edward Bird (1772–1819) - CC BY 4.0
Beddoes, Thomas, 1760-1808
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unknown - Public Domain
Ramsdell, Homer, 1810-1894
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Raimbach, Abraham, 1776-1843
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http://50.asc.upenn.edu - CC0 1.0
Gerbner, George