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Destréguil - Public Domain
unknown - Public Domain
unattributed - Public Domain
Brown Bros. - Public Domain
zombieite - CC BY 2.0
*:File:Paul_Spiring_in_2008.jpeg - CC BY-SA 3.0
Kenneth Stevens - CC BY-SA 4.0
Koch, Eric / Anefo -
U.S. Army - Public Domain
William Burton Gay - Public Domain
US Embassy Canada - CC BY 2.0
National Portrait Gallery, London - Public Domain
Daviddarom - CC0 1.0
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Courier, Paul-Louis, 1772-1825
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Destréguil - Public Domain
Bert, Paul, 1833-1886
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unknown - Public Domain
Kempe, A. B. (Alfred Bray), 1849-1922
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unattributed - Public Domain
Campioni, Inigo, 1878-1944
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Baum, Paul, 1859-1932
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unknown - Public Domain
McLean, Alney, 1779-1841
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Brown Bros. - Public Domain
Hapgood, Norman, 1868-1937
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Rose, Helen, 1904-1985
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zombieite - CC BY 2.0
Tobin, Austin J.
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*:File:Paul_Spiring_in_2008.jpeg - CC BY-SA 3.0
Hardwicke, Edward
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Wilkes, George, 1817-1885
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Du Barry, Jeanne Bécu, comtesse, 1743-1793
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Kenneth Stevens - CC BY-SA 4.0
Stevens, Kenneth N., 1924-....
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Whittredge, Worthington, 1820-1910
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Koch, Eric / Anefo -
Mandel, Ernest.
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U.S. Army - Public Domain
Arnold, William R. (William Richard), 1881-1965
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Dornberger, Walter, 1895-1980
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Singer, S. Fred (Siegfried Fred), 1924-
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William Burton Gay - Public Domain
Taylor, J. J. (John James), 1808-1892
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Lebel, Jean-Jacques
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Epaminondas, approximately 420 B.C.-
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Schultens, Albert, 1686-1750
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US Embassy Canada - CC BY 2.0
Wilkerson, Lawrence B.
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Frei Montalva, Eduardo, 1911-1982
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National Portrait Gallery, London - Public Domain
Isaacs, Susan Sutherland Fairhurst, 1885-1948
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Daviddarom - CC0 1.0
Darom, David
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unknown - Public Domain
Resnik, Regina, 1922-....
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Baur, Georg, 1859-1898
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Whitehead, Joseph, 1867-1938
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unknown - Public Domain
Walser, Robert, 1878-1956