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Mathew Brady Levin Corot Handy - Public Domain
Steve JurvetsonFlickreviewR/reviewed-pass - CC BY 2.0
Inasaridse - Public Domain
ABC News - Public Domain
unknown - Public Domain
S P Andrew Photography - Public Domain
Jan Vilímek - Public Domain
Hans Peters / Anefo - CC BY-SA 3.0
Christian Weger - CC BY-SA 2.0
Apeda (picture credit) - Public Domain
Sasoriza / Bryan Chan - CC BY-SA 2.0
Public Domain
Edward Sanford Harrison (editor-publisher); photographer unknown - Public Domain
Henry Maull (1829–1914) and John Fox (1832–1907) - Public Domain
Eugène Pirou (1841-1909) - Public Domain
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Manesson-Mallet, Allain, 1630?-1706?
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Webster, E. H. (Edwin Hanson), 1829-1893
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Féval, Paul, 1817-1887
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Mathew Brady Levin Corot Handy - Public Domain
Felton, William H. (William Harrell), 1823-1909
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Hollings, Ernest F., 1922-....
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Brown, Pete, 1940-
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Margolis, David, 1943-
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Schwatka, Frederick, 1849-1892
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Steve JurvetsonFlickreviewR/reviewed-pass - CC BY 2.0
McFerrin, Bobby
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Inasaridse - Public Domain
Araiza, Francisco
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ABC News - Public Domain
Howe, Quincy, 1900-....
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unknown - Public Domain
White, David, 1862-1935
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Ohair, Madalyn Murray
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S P Andrew Photography - Public Domain
Sutch, W. B. (William Ball), 1907-1975
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unknown - Public Domain
Moreau-Nélaton, Étienne, 1859-?
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Jan Vilímek - Public Domain
Vrchlický, Jaroslav, 1853-1912
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Hans Peters / Anefo - CC BY-SA 3.0
Constant, 1920-2005
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Christian Weger - CC BY-SA 2.0
Madonna, 1958-
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Ent, George, Sir, 1604-1689
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Apeda (picture credit) - Public Domain
Rose, Ruth, 1896-1978
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Bradford, Francis Newport, Earl of, 1619-1708
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Sasoriza / Bryan Chan - CC BY-SA 2.0
Hung, Samo, 1952-
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Public Domain
Paredes y Arrillaga, Mariano, 1797-1849
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Public Domain
Seripando, Girolamo, 1493-1563
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Fox, Charles-James, 1749-1806
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Bein, Alex, 1903-1988
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Standley, William Harrison, 1872-1963
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Edward Sanford Harrison (editor-publisher); photographer unknown - Public Domain
Rowe, P. T. (Peter Trimble), 1856-1942
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Henry Maull (1829–1914) and John Fox (1832–1907) - Public Domain
Scott, Robert Falcon, 1868-1912
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Eugène Pirou (1841-1909) - Public Domain
Chéruel, Adolphe, 1809-1891