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unknown -
Harris & Ewing, Washington, D.C. - Public Domain
uploaded to Wikipedia by Hlj - Public Domain
Krusty - CC BY-SA 2.0
Silvester Petra Sancta -
original uploader - Public Domain
Jens Christian Roseland - Public Domain
Alan Light at https://www.flickr.com/photos/alan-light/ - CC BY 2.0
Maurice Seymour, New York, photographer. - Public Domain
Henry D. Kingsbury, Simeon L.Deyo, editors. - Public Domain
Josef Löwy - Public Domain
Warner Brothers Studio - Public Domain
Philkon - Public Domain
JPRoche - CC BY-SA 3.0
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unknown -
Miller, Henry William, 1807-1885
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Harris & Ewing, Washington, D.C. - Public Domain
Mack, Julian W. (Julian William), 1866-1943
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uploaded to Wikipedia by Hlj - Public Domain
Pettigrew, James Johnston, 1828-1863
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Krusty - CC BY-SA 2.0
Gwynn, Tony
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Chatfield, Andrew G. (Andrew Gould), 1810-1875
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Silvester Petra Sancta -
Carafa, Pier Luigi, 1581-1655
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Stringham, Silas Horton, 1798-1876
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Roberts, Oran Milo, 1815-1898
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original uploader - Public Domain
Grahn, Lucile, 1819-1907
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Steinle, Eduard von, 1810-1886
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Stainer, John, 1840-1901
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Jens Christian Roseland - Public Domain
Preus, Herman Amberg, 1825-1894
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Alan Light at https://www.flickr.com/photos/alan-light/ - CC BY 2.0
Boyle, Peter, 1935-2006
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Botvinnik, M.M. (Mikhail Moiseevich), 1911-1995
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Paine, Robert Treat, 1773-1811
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Redpath, James, 1833-1891
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White, Thomas D. (Thomas Dresser), 1901-1965
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Reuter, Ludwig von
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Boscawen, Edward, 1711-1761
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Maurice Seymour, New York, photographer. - Public Domain
Adams, Edie, 1927-2008
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Capponi, Luigi, 1583-1659
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Selle, Thomas, 1599-1663
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Henry D. Kingsbury, Simeon L.Deyo, editors. - Public Domain
Manley, Joseph Homan, 1842-1905
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Josef Löwy - Public Domain
Stricker, S. (Salomon), 1834-1898
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Warner Brothers Studio - Public Domain
Egan, Richard, 1921-1987
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Philkon - Public Domain
Schuur, Diane
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Salam, Abdus, 1926-1996
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JPRoche - CC BY-SA 3.0
Cuny, Alain
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Candèze, E. C. (Ernest Charles), 1827-1898
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Bingham, Hiram, 1789-1869