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United States Department of Energy - Public Domain
unknown - Public Domain
user at project - Public Domain
NARA-Author -
State of Tennessee - Public Domain
Edith Wharton collection - Public Domain
:en:Northwestern University - Public Domain
gdcgraphics at https://www.flickr.com/photos/gdcgraphics/ -
Public Domain
Jerré Tanner photographer - CC BY-SA 3.0
General Artists Corporation-GAC-management. - Public Domain
Gabriel Sozzi - CC BY-SA 4.0
PD-user-w - CC BY-SA 3.0
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United States Department of Energy - Public Domain
Edwards, James B., 1927-
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Wallace, William, Sir, -1305
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Toledo, Pedro de 1484-1553
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Dvorak, Ann, 1911-1979
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Ferri, Antonio, 1912-
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Stuart, Arabella, Lady, 1575-1615
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Myers, Henry L. (Henry Lee), 1862-1943
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unknown - Public Domain
Green, A. H. (Andrew Haswell), 1820-1903
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unknown - Public Domain
Booy, Theodoor Hendrik Nikolaas de, 1882-1919
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user at project - Public Domain
Brooks, Harvey, 1944-
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NARA-Author -
Giscard d'Estaing, Anne-Aymone, 1933-
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Dmytryk, Edward
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State of Tennessee - Public Domain
Horton, Henry H., 1866-1934
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Edith Wharton collection - Public Domain
Sturgis, Howard Overing, 1855-1920
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unknown - Public Domain
Hulme, Kathryn, 1900-1981
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Bimboni, Alberto
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Shrewsbury, Charles Talbot, duke of, 1660-1718
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:en:Northwestern University - Public Domain
Hayford, J. E. Casely (Joseph Ephraim Casely), 1866-1930
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Coleman, Bessie, 1892-1926
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gdcgraphics at https://www.flickr.com/photos/gdcgraphics/ -
Scherfig, Lone, 1959-....
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Public Domain
Lonergan, Augustine, 1874-1947
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Jerré Tanner photographer - CC BY-SA 3.0
Hess, Harvey
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General Artists Corporation-GAC-management. - Public Domain
Adams, Don, 1923-2005
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unknown - Public Domain
Gardiner, Asa Bird, 1839-1919
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Horton, Willie, 1942-
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Smart, Christopher, 1722-1771
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unknown - Public Domain
Coalter, John, 1769-1838
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Marlborough, Charles Spencer 1706-1758 duc de
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Gabriel Sozzi - CC BY-SA 4.0
Brown, Raymond Edward
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PD-user-w - CC BY-SA 3.0
Atkinson, John W. (John William), 1923-2003