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Public Domain
unknown - Public Domain
Gert-Martin Greuel - CC BY-SA 2.0
Brady National Photographic Art Gallery (Washington, D.C.) - Public Domain
ataelw - CC BY 2.0
US gov - Public Domain
Unknown - Public Domain
Sarony - Public Domain
Denverjeffrey - CC BY-SA 3.0
Stephencdickson - CC BY-SA 4.0
Agence Rol - Public Domain
Nv8200p - CC BY-SA 4.0
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Townsend, Solomon, 1746-1811
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Public Domain
Bell, T. H. (Thomas H.), 1867-1942
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Public Domain
McDonald, Lawrence Patton
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Taney, Roger Brooke, 1777-1864
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Burnett, Peter H. (Peter Hardeman), 1807-1895
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unknown - Public Domain
Paul, the Deacon, approximately 720-799?
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La Monnoye, Bernard de 1641-1728
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Manet, Julie, 1878-1966
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Smith, W. Sidney (William Sidney), Sir, 1764-1840
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Gert-Martin Greuel - CC BY-SA 2.0
Milnor, John W. (John Willard), 1931-
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Brady National Photographic Art Gallery (Washington, D.C.) - Public Domain
Shubrick, William Branford, 1790-1874
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ataelw - CC BY 2.0
Hendricks, Jon, 1921-2017
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Rushworth, John, 1612?-1690
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US gov - Public Domain
Bradley, Stephen Row, 1754-1830
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Leach, D. C. (DeWitt Clinton), 1822-1909
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Taylor, Edward Robeson, 1838-1923
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Unknown - Public Domain
Salmon, D. E.
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Sarony - Public Domain
Heron, Bijou, 1863-1937
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Laney, Benjamin Travis, 1896-1977
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Gallivan, James A., 1866-1928
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Denverjeffrey - CC BY-SA 3.0
Bailey, Champ, 1978-
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Hennig, Willi, 1913-1976
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Schneier, Bruce, 1963-....
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Stephencdickson - CC BY-SA 4.0
Soutar, William, 1898-1943
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Stewart, William H. (William Henry), 1838-1912
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unknown - Public Domain
Dietz, Robert S. (Robert Sinclair), 1914-1995
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Moore, Arthur Harry, 1879-1952
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Agence Rol - Public Domain
Bacon, Reginald, Sir, 1863-1947
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Nv8200p - CC BY-SA 4.0
Allen, Jeffery Renard, 1962-
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Pizzetti, Ildebrando