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The Library of Congress -
unknown - Public Domain
Annie D. Tallent, author. Nixon-Jones Printing Co. (St. Louis, MO), publisher. - Public Domain
Herman Hiller / ''New York World-Telegram & Sun'' - Public Domain
Public Domain
Charles Roscoe Savage - Public Domain
Nv8200p - CC BY-SA 3.0
Benjamin Applebaum - Public Domain
Philkon - Public Domain
Dmenkart - CC BY-SA 4.0
David Zucker -
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Sims, John, 1749-1831
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Pugh, Evan, 1828-1864
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The Library of Congress -
Stacy, Jess, 1904-1995
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Cuvier, Frédéric, 1773-1838
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Walrath, Jack
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Futrelle, Jacques, 1875-1912
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Wilcox, R. W. (Robert William), 1855-1903
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unknown - Public Domain
Schrenck-Notzing, A. von (Albert), 1862-1929
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Annie D. Tallent, author. Nixon-Jones Printing Co. (St. Louis, MO), publisher. - Public Domain
Bennett, Granville G. (Granville Gaylord), 1833-1910
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La Condamine, Charles-Marie de 1701-1774
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Herman Hiller / ''New York World-Telegram & Sun'' - Public Domain
King, Coretta Scott, 1927-2006
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Public Domain
Alzate y Ramírez, José Antonio de 1737-1799
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Charles Roscoe Savage - Public Domain
Young, John W. (John Willard), 1844-1924
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Päer, Ferdinando, 1771-1839
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Nv8200p - CC BY-SA 3.0
Stiles, T.J.
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Benjamin Applebaum - Public Domain
Gorelick, Jamie, 1960-
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Karnes, Henry Wax, 1812-1840
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Philkon - Public Domain
Jones, Mickey
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Dmenkart - CC BY-SA 4.0
Richardson, Judy, 1944-
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Morellet, François
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Jones, Lois Mailou
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David Zucker -
Rhodes, L. (Louise)
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Sullivan, Maxine, 1911-1987
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Clark, Jonas Gilman, 1815-1900
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Adami, Valério, 1935-
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unknown - Public Domain
Nelson, N. O. (Nelson Oliver), 1844-1922
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unknown - Public Domain
McQuaid, Bernard J., 1823-1909
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Key, Philip Barton, 1818-1859
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Searcy, Nick
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Moe, Finn 1902-1971