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DrPenfield - CC BY-SA 3.0
Wikifrits - Public Domain
Heinrich Hofmann - Public Domain
original uploader - Public Domain
Teddyyy - CC BY 3.0
Department of the Treasury - Public Domain
Isaac M. Wise - Public Domain
Public Domain
Sp90 - Public Domain
not stated - Public Domain
unknown - Public Domain
Xavierazan - CC BY-SA 3.0
Georges Biard - CC BY-SA 3.0
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Beauvoir, Simone de, 1908-1986.
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DrPenfield - CC BY-SA 3.0
Barnes, Ernie, 1938-2009
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Wikifrits - Public Domain
Somaini, Francesco, 1926-
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Lafargue, Paul, 1842-1911
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Heinrich Hofmann - Public Domain
Hofmann, Heinrich (Johann Michael Ferdinand Heinrich), 1824-1911
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original uploader - Public Domain
Latrobe, Charles Joseph, 1801-1875
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Sophia, Princess, daughter of George III, King of Great Britain, 1777-1848
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Hatchett, Joseph W., 1932-
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Dimitrie Cantemir, Voivode of Moldavia, 1673-1723
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Teddyyy - CC BY 3.0
Desproges, Pierre
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Coggeshall, William Turner, 1824-1867
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Department of the Treasury - Public Domain
O'Neill, Paul H. (Paul Henry), 1935-
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Isaac M. Wise - Public Domain
Wise, Isaac Mayer, 1819-1900
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Flatley, Michael
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Public Domain
Thomas, James, 1785-1845
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Sp90 - Public Domain
Hartt, Charles Frederick, 1840-1878
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Addison, Laura, 1822-1852
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Torp, Oscar, 1893-1958
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Lee-Hamilton, Eugene
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Weizenbaum, Joseph.
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Washington, William, 1752-1810
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Moore, Benjamin, 1867?-1922
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not stated - Public Domain
Smedley, W. T. (William Thomas), 1858-1920
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unknown - Public Domain
Ver Beck, Frank, 1858-1933
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Turgenev, A. (Aleksandr), 1784-1845
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unknown - Public Domain
Taylor, John, 1808-1887
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Xavierazan - CC BY-SA 3.0
Azan, Paul, 1874-1951
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Georges Biard - CC BY-SA 3.0
Cluzet, François
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Sterling, Robert, 1917-2006
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Clements, Vassar