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Unknown (not specified); possibly from one of Eustachius' books. - Public Domain
Billmckern - CC BY-SA 4.0
עדי כהן צדק - CC BY-SA 3.0
US Navy - Public Domain
John Thomas (1838-1905) circa 1885 - CC BY-SA 2.0
Georges Biard - CC BY-SA 3.0
Gilbert Stuart, 1805 - Public Domain
Charles Willson Peale - Public Domain
Andemaya - CC BY-SA 4.0
Kotoviski - CC BY-SA 3.0
Ronald Feldman Fine Arts -
unknown -
Roberta F. - CC BY-SA 3.0
unknown - CC0 1.0
Shunn - CC BY-SA 3.0
Charles Balthazar Julien Fevret de Saint-Memin - Public Domain
Maarten van Heemskerck - Public Domain
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Unknown (not specified); possibly from one of Eustachius' books. - Public Domain
Eustachi, Bartolomeo, -1574
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Butt, Lawson, 1883-1956
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Rich, Vera.
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Cavaignac, Eugène, 1802-1857
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Zenneck, J. (Jonathan), 1871-
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Dufour, Guillaume Henri, 1787-1875
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Leavy, Charles Henry, 1884-1952
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Billmckern - CC BY-SA 4.0
Lyon, Matthew, 1749-1822
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Vachon, John, 1914-1975
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Keating, Thomas
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עדי כהן צדק - CC BY-SA 3.0
Duchin, Arkadi, 1963-
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US Navy - Public Domain
Hull, Isaac, 1773-1843
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John Thomas (1838-1905) circa 1885 - CC BY-SA 2.0
Morris-Jones, John, 1864-1929
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Georges Biard - CC BY-SA 3.0
Zabou
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Gilbert Stuart, 1805 - Public Domain
Nicholas, Wilson Cary, 1757-1820.
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Charles Willson Peale - Public Domain
Walton, George, c. 1749-1804
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Andemaya - CC BY-SA 4.0
Parsons, Alan
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Kotoviski - CC BY-SA 3.0
Ndour, Youssou
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Park, Chung-Hee 1917-1979
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Ronald Feldman Fine Arts -
Beuys, Joseph
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unknown -
Koffka, Kurt, 1886-1941
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Gillespie, Dizzy, 1917-1993
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Roberta F. - CC BY-SA 3.0
Romero, Enrique, 1930-
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Redpath, James, 1833-1891
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Georges Biard - CC BY-SA 3.0
McAvoy, James, 1979-....
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Young, Gary, 1951-
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unknown - CC0 1.0
Zapata de Mendoza, Antonio, 1550-1635
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Shunn - CC BY-SA 3.0
Budrys, Algis, 1931-2008
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Charles Balthazar Julien Fevret de Saint-Memin - Public Domain
Holmes, David, 1770-1832
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Maarten van Heemskerck - Public Domain
Gemma, Frisius, 1508-1555