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credited to Ernest deKoven Leffingwell; cropped by uploader - Public Domain
Selbymay - CC BY-SA 4.0
Unidentified (Ensian published by University of Michigan) - Public Domain
John F. Kennedy Presidential Library, National Archives - Public Domain
Nightscream - CC BY 3.0
anonymous - Public Domain
unknown - Public Domain
Georges Scott - Public Domain
US Embassy Canada - CC BY 2.0
M. M. Mangasarian - Public Domain
Cmk2168 - CC BY-SA 3.0
China Crisis - CC BY-SA 3.0
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Highsmith, Carol M., 1946-
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credited to Ernest deKoven Leffingwell; cropped by uploader - Public Domain
Leffingwell, Ernest De Koven, 1876-1971.
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Wilson, G. W. (George Washington), 1823-1893
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Selbymay - CC BY-SA 4.0
Malavoy, Christophe
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Hall, Ella, 1896-1981
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Unidentified (Ensian published by University of Michigan) - Public Domain
Piaget, Jean, 1896-1980
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Temple, Richard Carnac, Sir, 1850-1931
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Smith, Stephen, 1823-1922
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John F. Kennedy Presidential Library, National Archives - Public Domain
Warnecke, John Carl
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McMichen, Clayton, 1900-1970
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Nightscream - CC BY 3.0
Portacio, Whilce
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Villarreal, Alicia
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anonymous - Public Domain
Phillpotts, Eden, 1862-1960
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Altavilla, Ramiro de la Puente y González-Nandín, Marqués de 1845-1909.
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López, Vicente, 1772-1850
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Bruce, Lenny, 1925-1966
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unknown - Public Domain
Yeates, V. M. (Victor Maslin), 1897-1934
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unknown - Public Domain
Rihani, Ameen Fares, 1876-1940
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Georges Scott - Public Domain
Steinheil, Marguerite, 1869-1954
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US Embassy Canada - CC BY 2.0
Good, Bill
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M. M. Mangasarian - Public Domain
Mangasarian, M. M. (Mangasar Mugurditch), 1859-1943
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Cmk2168 - CC BY-SA 3.0
Silver, Shelly
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Reynier, J.L.E.
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Kino, Eusebio Francisco, 1644-1711
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Gage, Jack R. (Jack Robert), 1899-1970
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China Crisis - CC BY-SA 3.0
O'Dette, Paul, 1954-....
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Geoffrin, Marie-Thérèse Rodet, 1699-1777
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Rohl-Smith, Carl, 1848-1900
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Chambi, Martín 1891-1973
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Gromov, M. (Mikhail)