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unknown - Public Domain
Freulich - Public Domain
Twice25 - Public Domain
Onehandclapping - CC BY-SA 3.0
Norbert Schnitzler -
Daderot - CC0 1.0
unk- although signature is at lefthand bottom of picture. - Public Domain
Hillebrant Jacobsz. van Wouw I - Public Domain
Alan Light - CC BY 2.0
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Bohémond - CC BY-SA 3.0
--<font face="Forte">Diniz - CC BY-SA 3.0
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Koning, Hans, 1921-
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Hammond, Ogden H. (Ogden Haggerty), 1869-1956
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unknown - Public Domain
Garvey, Amy Jacques
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Freulich - Public Domain
Columbo, Russ, 1908-1934
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Russolo, Luigi
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Twice25 - Public Domain
Pavese, Cesare
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Gaudier-Brzeska, Henri, 1891-1915
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Miyagi, Michio
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Howe, Louis M. (Louis McHenry), 1871-1936
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Onehandclapping - CC BY-SA 3.0
Frumkin, Gene
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Norbert Schnitzler -
Goretti, Maria, Saint, 1890-1902
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Doty, James Duane, 1799-1865
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Daderot - CC0 1.0
McAllister, Matthew Hall, 1800-1865
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unk- although signature is at lefthand bottom of picture. - Public Domain
Alexander, Annie Montague, 1867-1950
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Smith, Amanda, 1837-1915
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Borden, Olive, 1906-1947
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Frederick I, King of Bohemia, 1596-1632
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Johan Maurits, Prince of Nassau-Siegen, 1604-1679
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Vandervelde, Émile, 1866-1938
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Hillebrant Jacobsz. van Wouw I - Public Domain
Montigny, Floris van Montmorency, , 1527-1570
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Alan Light - CC BY 2.0
Principal, Victoria
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Hřímalý, Jan
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Binion, Benny, 1904-1989
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Liebknecht, Wilhelm, 1826-1900
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Bohémond - CC BY-SA 3.0
Thibon, Gustave, 1904-
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Pettigrew, Richard F. (Richard Franklin), 1848-1926
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Dyer, Henry, 1848-1918
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--<font face="Forte">Diniz - CC BY-SA 3.0
Dalley, William Bede, 1831-1888
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Meyers, Nancy
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Boece, Hector, 1465?-1536