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unknown -
David Bowers - Public Domain
William Faithorne - Public Domain
NBC - Public Domain
United States Navy photograph - Public Domain
H.S. Mendelssohn 1848-1908 - Public Domain
Public Domain
Philkon - Public Domain
Franz Josef Böhm -
University of Wyoming. American Heritage Center - Public Domain
No photographer credited. - Public Domain
w:de:Benutzer:Bedrich - Public Domain
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Pankhurst, Christabel, Dame, 1880-1958
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Heim, Ernst Ludwig, 1747-1834
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Bagby, Arthur P. (Arthur Pendleton), 1794-1858
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unknown -
Aronson, Naoum, 1872-1943
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Isham, Charles, 1819-1903
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David Bowers - Public Domain
Henderson, Lucius
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Gifford, William, 1756-1826
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William Faithorne - Public Domain
Hacket, John, 1592-1670
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NBC - Public Domain
O'Keefe, Walter, 1900-1983
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United States Navy photograph - Public Domain
Austin, Bernard L. (Bernard Lige), 1902-1979
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H.S. Mendelssohn 1848-1908 - Public Domain
Shakespear, Olivia
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Hamer, Thomas Lyon, 1800-1846
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Public Domain
Wightman, Joseph M. (Joseph Milner), 1812-1885
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Urban VII, Pope, 1521-1590
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Eriksen, Edvard, 1876-1959
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Minakata, Kumagusu, 1867-1941
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Dušan, Emperor of Serbia, approximately 1308-1355
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Maccoy, Guy C., 1904-1981
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Ernesti, Johann August, 1707-1781
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Moroni, Giovanni Battista, approximately 1523-1578
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Philkon - Public Domain
Vereen, Ben
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Harʾēl, Îsser 1912-2003
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Böll, Heinrich, 1917-1985
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Franz Josef Böhm -
Rosegger, Peter, 1843-1918
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University of Wyoming. American Heritage Center - Public Domain
McGee, Gale W. (Gale William), 1915-1992
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Dickey, John Sloan, 1907-1991
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No photographer credited. - Public Domain
Lincoln, Jeanie Gould, 1846-1921
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w:de:Benutzer:Bedrich - Public Domain
Maestlin, Michael, 1550-1631
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Ignarro, Louis J.
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Kofoid, Charles A. (Charles Atwood), 1865-1947