Image from Wikimedia Commons
Georges Biard - CC BY-SA 3.0
William Willard - Public Domain
unknown - Public Domain
Johannes Oertel - Public Domain
Pavelka01 - CC BY-SA 3.0
Public Domain
Elisàr von Kupffer - Public Domain
Contemporary portrait - Public Domain
Nv8200p - CC BY-SA 3.0
Sri Chinmoy Centre - CC BY-SA 3.0
U.S. Government Printing Office - Public Domain
Pierkolp - CC BY-SA 3.0
not stated - Public Domain
danlev - CC BY-SA 3.0
Engraved by Capewell & Kimmel - Public Domain
Yves Philippe de Francqueville - CC BY-SA 3.0
Contemporary photograph - Public Domain
Image from Wikimedia Commons
Georges Biard - CC BY-SA 3.0
Corneau, Alain, 1943-2010
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Dacre, Charlotte 1772-1825
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Garfinkel, Simson.
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William Willard - Public Domain
Washburn, Emory, 1800-1877
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Low, George M.
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Moore, Thomas Overton, 1804-1876
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unknown - Public Domain
Ramsay, A. C. (Andrew Crombie), 1814-1891
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Morgan, Frederick, 1894-1967
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Van Horne, William Cornelius, Sir, 1843-1915
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Iwaszkiewicz, Jarosław, 1894-1980
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Ismail, Khedive of Egypt, 1830-1895
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Johannes Oertel - Public Domain
Jasper, William, approximately 1750-1779
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Magee, James M. (James McDevitt), 1877-1949
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Pavelka01 - CC BY-SA 3.0
Andújar, Daniel G. (Daniel García), 1966-
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Public Domain
Usher, John Palmer, 1816-1889
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Elisàr von Kupffer - Public Domain
Kupffer, Elisàr von (1872-1942).
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Contemporary portrait - Public Domain
Duppa, Brian, 1588-1662
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Sheen, Charlie
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Cassab, Judy, 1920-
Image from Wikimedia Commons
Nv8200p - CC BY-SA 3.0
Richards, Eugene
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Sri Chinmoy Centre - CC BY-SA 3.0
Pearl, Bill, 1930-
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U.S. Government Printing Office - Public Domain
Gilbert, Jacob H., 1920-1981
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Pierkolp - CC BY-SA 3.0
Ristic, André, 1972-
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not stated - Public Domain
Rice, Cale Young, 1872-1943
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Bach, Wilhelm Friedrich Ernst, 1759-1845
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danlev - CC BY-SA 3.0
Biller, Kenneth.
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Engraved by Capewell & Kimmel - Public Domain
Fay, Theodore S. (Theodore Sedgwick), 1807-1898
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Yves Philippe de Francqueville - CC BY-SA 3.0
Francavilla, Pietro, 1548-1615
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Contemporary photograph - Public Domain
Mann, Tom, 1856-1941
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Geren, Preston M. (Preston Murdoch), 1952-