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unknown - Public Domain
Matthew Brady - Public Domain
Percy Frazer Smith - Public Domain
Louis Silvestre (photographer) - Public Domain
Myrtle26 - CC BY-SA 2.0
Unknown - Public Domain
Bassano ltd -
Schutz - CC BY-SA 4.0
DoulosBen - CC BY-SA 4.0
United States Department of Defense - Public Domain
Jacques Reich (based on an earlier work by another artist) - Public Domain
Giancarlo Botti (1931-2009), italian photographer -
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unknown - Public Domain
Dasburg, Andrew, 1887-1979
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Waterhouse, Benjamin, 1754-1846
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Holl, William, 1807-1871
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Matthew Brady - Public Domain
Borie, A. E. (Adolph Edward), 1809-1880
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Percy Frazer Smith - Public Domain
Brackenridge, H.M. (Henry Marie), 1786-1871
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Louis Silvestre (photographer) - Public Domain
Ibert, Jacques, 1890-1962
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Myrtle26 - CC BY-SA 2.0
Deane, John F., 1943-
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Maxwell, John Grenfell 1859-1929
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Fleischer, Max, 1883-1972
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unknown - Public Domain
Backer-Grøndahl, Agathe
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Unknown - Public Domain
Creelman, James Ashmore
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Bassano ltd -
Mills, Florence, 1896-1927
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Verkade, Jan, 1868-1946
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unknown - Public Domain
Bronson, Alvin, 1783-1881
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Zhirinovskiĭ, Vladimir, 1946-
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Cruce, Lee, 1863-1933
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Schutz - CC BY-SA 4.0
Gelman, Andrew.
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Hawkins, John, 1719-1789
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DoulosBen - CC BY-SA 4.0
Kinlaw, Dennis F., 1922-
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United States Department of Defense - Public Domain
Chun, Doo-hwan
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Mattern, Jimmie
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Worcester, Dean C. (Dean Conant), 1866-1924
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Kuhn, Adalbert, 1812-1881
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McConnell, John P. (John Paul), 1908-1986
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Kluit, Adriaan, 1736-1807
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Olivier, Noel, 1892-
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Lichtenstein, Hinrich, 1780-1857
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Cao, Pi, 187-226
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Jacques Reich (based on an earlier work by another artist) - Public Domain
Ponce de León, Juan, 1460?-1521
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Giancarlo Botti (1931-2009), italian photographer -
Maccione, Aldo, 1935-...