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SimoneSandoval - CC BY-SA 3.0
Sarah K. Buka - Public Domain
Public Domain
Mudd Manuscript Library, Princeton University - Public Domain
George Grantham Bain Collection - Public Domain
Charles Townley - Public Domain
Arvee Eco - CC BY-SA 2.0
unknown - CC BY-SA 3.0
LW77 - Public Domain
mackbrad - CC BY 2.0
DtemiankaHT - Public Domain
White House Photograph Office - Public Domain
Anton Retel Helmrich - CC BY 3.0
Zheng Yongnian - CC BY-SA 3.0
unknown - Public Domain
Sam Hood - Public Domain
Mborda.m - CC BY-SA 3.0
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SimoneSandoval - CC BY-SA 3.0
Garcia, Charles P. (Charles Patrick)
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Schwenckfeld, Caspar, 1489-1561
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Haro y Guzmán, Gaspar de, Marqués del Carpio, 1629-1687
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Sarah K. Buka - Public Domain
Tisza, László 1907-2009
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Public Domain
Isabella, Queen, consort of Edward II, King of England, 1292-1358
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Mudd Manuscript Library, Princeton University - Public Domain
Goheen, Robert F. (Robert Francis), 1919-2008
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Frederick William I, King of Prussia, 1688-1740
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George Grantham Bain Collection - Public Domain
Aehrenthal, Aloys, Graf Lexa von, 1854-1912
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Schmid, Herman, 1815-1880
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Charles Townley - Public Domain
Bigland, Ralph, 1711-1784
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Arvee Eco - CC BY-SA 2.0
Frazier, Joe, 1944-2011
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unknown - CC BY-SA 3.0
Wilf, Herbert S., 1931-2012
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Obin, Philomé
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LW77 - Public Domain
Beattie, Peter, 1952-
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mackbrad - CC BY 2.0
Johnston, Lynn Franks, 1947-....
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DtemiankaHT - Public Domain
Temianka, Henri
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White House Photograph Office - Public Domain
Lieberman, Evelyn S., 1944-
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Anton Retel Helmrich - CC BY 3.0
Retel Helmrich, Leonard
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Reger, Max
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Roden, Robert Jocelyn, Earl of, 1788-1870
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Zheng Yongnian - CC BY-SA 3.0
Zheng, Yongnian.
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Simons, B. (Barbara), 1941-
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Atkinson, James, 1780-1852
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Beauharnois, Charles de 1671?-1749
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unknown - Public Domain
Bayly, Thomas Haynes, 1797-1839
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Sam Hood - Public Domain
Hammond, Joan, 1912-1996
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Chapman, Matthew, 1950-
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Mborda.m - CC BY-SA 3.0
Gomez, Eddie
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Munk, Walter H. (Walter Heinrich), 1917-
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unknown - Public Domain
Sykes, Mark, 1879-1919