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Tom Marcello - CC BY-SA 2.0
unknown - Public Domain
Nadya Peek - CC BY-SA 2.5
anonymous -
Contemporary portrait - Public Domain
Open Library - CC0 1.0
original uploader - Public Domain
Federal Government of the United States - Public Domain
Thomas Gibson - Public Domain
Mikhail Nesterov - Public Domain
Users :de:ArtMechanic - Public Domain
Who-When-What Company - Public Domain
US Government Printing Office - Public Domain
Machmit (Machmit - CC BY-SA 3.0
Constru-centro - CC BY-SA 4.0
A. Roe Anderson - Public Domain
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Tom Marcello - CC BY-SA 2.0
Cowell, Stanley
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Basile, Giambattista, approximately 1575-1632
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unknown - Public Domain
Marvin, William, 1808-
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Dibelius, Otto, 1880-1967
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Carlton, Doyle Elam, 1885-1972
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Nadya Peek - CC BY-SA 2.5
Bakker, Gijs, 1942-....
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anonymous -
Brinz, Alois von 1820-1887
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Cole, Cyrenus, 1863-1939
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unknown - Public Domain
Domenichino, 1581-1641
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Ratzel, Friedrich, 1844-1904?
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Contemporary portrait - Public Domain
Coke, Thomas, 1747-1814
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Open Library - CC0 1.0
Newton, Eric, 1893-1965
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Ritchie, Albert C. (Albert Cabell), 1876-1936
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original uploader - Public Domain
Buss, Robert William, 1804-1875
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Federal Government of the United States - Public Domain
York, Herbert F. (Herbert Frank)
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Lowry, T. Martin (Thomas Martin), 1874-1936
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Thomas Gibson - Public Domain
Sacheverell, Henry, 1674?-1724
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unknown - Public Domain
Kli︠u︡ev, Nikolaĭ Alekseevich, 1887-1937
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Grandi, Dino, 1895-1988
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Rice, William S. (William Seltzer), 1873-1963
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Mikhail Nesterov - Public Domain
Korin, Pavel Dmitrievich, 1892-1967
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Laning, Jay Ford, 1853-1941
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Users :de:ArtMechanic - Public Domain
Lacordaire, Théodore, 1801-1870
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Who-When-What Company - Public Domain
Dumont, Ebenezer, 1814-1871
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US Government Printing Office - Public Domain
Downing, Thomas N.
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Machmit (Machmit - CC BY-SA 3.0
Hunt, Tim, 1943-....
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Constru-centro - CC BY-SA 4.0
Jackson, Michael, 1958-2009
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A. Roe Anderson - Public Domain
Moran, Robert, 1857-1943
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Riis, Jacob A. (Jacob August), 1849-1914
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Hauge, Hans Nielsen, 1771-1824