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Artist: S. J. Woolf (Samuel Johnson Woolf, 1880-1948)<br />''Time'' magazine - Public Domain
US Government Printing Office - Public Domain
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unknown - Public Domain
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Office of the Juvenile Instructor - Public Domain
Embassy Pictures International - Public Domain
Fabian Bachrach - CC BY-SA 3.0
Photo by Elson-Alexandre, Los Angeles - Public Domain
Public Domain
w - Public Domain
Gustave Courbet - Public Domain
professor David Assaf - CC BY-SA 3.0
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Artist: S. J. Woolf (Samuel Johnson Woolf, 1880-1948)<br />''Time'' magazine - Public Domain
Hertz, Alfred
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McLean, Evalyn Walsh, 1886-1947
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US Government Printing Office - Public Domain
Wampler, William C. (William Creed), 1926-2012
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Dewey, Daniel, 1766-1815
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Anderson, Christopher, 1782-1852
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Ferri, Antonio, 1912-
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Johnson, James P. (James Price), 1894-1955
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Fife, James, 1897-1975
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Argenson, Marc-René de Voyer d', 1652-1721
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Rigsbee, David
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Blizard, William, Sir, 1743-1835
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unknown - Public Domain
Kimball, Fiske, 1888-1955
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original uploader - Public Domain
Hansen, P. A. (Peter Andreas), 1795-1874
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Office of the Juvenile Instructor - Public Domain
Young, Seymour B. (Seymour Bicknell), 1837-1924
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Schwenckfeld, Caspar, 1489-1561
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Johnson, Samuel, 1709-1784
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Embassy Pictures International - Public Domain
Richardson, Ralph, sir, 1902-1983
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Eck, Johann, 1486-1543
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Gaay Fortman, Bastiaan de
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Fabian Bachrach - CC BY-SA 3.0
Newton, Norman T., 1898-1992
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Photo by Elson-Alexandre, Los Angeles - Public Domain
Hanna, William, 1910-2001
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unknown - Public Domain
Cadman of Silverdale, John Cadman, Baron, 1877-1941
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Talmage, T. de Witt (Thomas de Witt), 1832-1902
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unknown - Public Domain
Flamínio, Marco Antonio, 1498-1550
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Public Domain
Balmat, Jacques, 1762-1834
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w - Public Domain
Symmes, John Cleves, 1742-1814
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Gustave Courbet - Public Domain
Gautier, Amand-Désiré, 1825-1894
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professor David Assaf - CC BY-SA 3.0
Green, Arthur, 1941-....
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Morris, Errol
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Dean, William F. (William Frishe), 1899-1981