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George Grantham Bain Collection (Library of Congress) - Public Domain
Mathew Brady - Public Domain
unknown - Public Domain
unknown; original uploader was Gajamukhu - Public Domain
Jacobus Hendrik Pierneef - Public Domain
НКВД СССР - Public Domain
Hubert von Herkomer - Public Domain
Roger Higgins, World Telegram staff photographer - Public Domain
Jean-Baptiste Madou - Public Domain
US Government Printing Office - Public Domain
Sir Thomas Mitchell -
Yuval Yaron - CC BY-SA 3.0
Gage Skidmore - CC BY-SA 3.0
Unidentified photographer - Public Domain
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George Grantham Bain Collection (Library of Congress) - Public Domain
MacGrath, Harold, 1871-1932
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Kaup, J. J. (Johann Jacob), 1803-1873
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Mathew Brady - Public Domain
Willey, Waitman T. (Waitman Thomas), 1811-1900
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unknown - Public Domain
Judd, Gerrit Parmele, 1803-1873
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Cobbett, William, 1763-1835
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unknown; original uploader was Gajamukhu - Public Domain
Pattamal, Damal Krishna, 1919-2009
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unknown - Public Domain
Mortimer, James, 1833-1911
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Vintimille du Luc, Charles-Gaspard-Guillaume de 1655-1746
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Jacobus Hendrik Pierneef - Public Domain
Totius, 1877-1953
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Draper, Henry, 1837-1882
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Le Corbusier, 1887-1965
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Giles, William Branch, 1762-1830
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Dunn, Joséphine 1906-1983
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Lisboa, António Francisco, 1730-1814
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НКВД СССР - Public Domain
Dombrovskiĭ, I︠U︡riĭ Osipovich
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Hubert von Herkomer - Public Domain
Lawson, Cecil Gordon, 1851-1882
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Pigna, Giovan Battista, 1529-1575
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unknown - Public Domain
Belocca, Anna de, 1854-
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Roger Higgins, World Telegram staff photographer - Public Domain
Peale, Norman Vincent, 1898-1993
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Jean-Baptiste Madou - Public Domain
Mons, Jean-Baptiste van, 1765-1842
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US Government Printing Office - Public Domain
Cornell, Robert J. O. Praem.
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Kentish, John
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Curtis, Charles, 1860-1936
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Ogata, Kōrin, 1658-1716
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Sir Thomas Mitchell -
Donahoe, Jack, 1806-1830
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Yuval Yaron - CC BY-SA 3.0
Kosashvili, Dover, 1966-....
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unknown - Public Domain
Lear, William Powell, 1902-
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Gage Skidmore - CC BY-SA 3.0
West, Adam, 1928-
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Hunt, Robert, 1807-1887
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Unidentified photographer - Public Domain
Birch, Reginald B., 1856-1943