Image from Wikimedia Commons
unknown - Public Domain
Brother Bulldog - CC BY-SA 3.0
Public Domain
National Photo Company Collection (Library of Congress) - Public Domain
Robert Sigl - CC BY-SA 3.0
nicolas genin - CC BY-SA 2.0
Jörg Zägel - CC BY-SA 3.0
Unknown - Public Domain
John Ferguson - CC BY-SA 3.0
Unknown photographer -
Mathew Brady Levin Corot Handy - Public Domain
US Government Printing Office - Public Domain
Antonio Macipe Samper - Public Domain
Image from Wikimedia Commons
unknown - Public Domain
Altamirano, Ignacio Manuel, 1834-1893
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unknown - Public Domain
Nathan, Maud, 1862-
Image from Wikimedia Commons
Brother Bulldog - CC BY-SA 3.0
Glasser, William, 1925-2013
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Penhallow, D. P. (David Pearce), 1854-1910
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Bledsoe, Jesse, 1776-1836
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unknown - Public Domain
McGuire, Thomas Buchanan, Jr., 1920-1945
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Public Domain
Brown, George Edward, 1920-1999
Image from Wikimedia Commons
National Photo Company Collection (Library of Congress) - Public Domain
Butler, Nicholas Murray, 1862-1947
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Robert Sigl - CC BY-SA 3.0
Sigl, Robert
Image from Wikimedia Commons
nicolas genin - CC BY-SA 2.0
Sharif, Omar, 1932-....
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Campbell, James, 1949-
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Merulo, Claudio
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Davidson, Nancy, 1943-
Image from Wikimedia Commons
Jörg Zägel - CC BY-SA 3.0
Neander, August, 1789-1850
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Unknown - Public Domain
Hardenbergh, Jacob R. (Jacob Rutsen), 1736-1790
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Della Rovere, Francesco Maria, duca d'Urbino, 1548-1631
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John Ferguson - CC BY-SA 3.0
Moreno, Rita, 1931-
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Temple, Richard Grenville-Temple, Earl, 1711-1779
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Unknown photographer -
Vidal, Paul, 1863-1931
Image from Wikimedia Commons
Mathew Brady Levin Corot Handy - Public Domain
Tabor, Horace Austin Warner, 1830-1899
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Dunsterville, L. C. (Lionel Charles), 1865-1946
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Forbes, Archibald, 1838-1900
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Franzen, Jonathan
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Pratt, Matthew, 1734-1805
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Public Domain
Watson, Hewett Cottrell, 1804-1881
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US Government Printing Office - Public Domain
Kyl, John H. (John Henry), 1919-2002
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unknown - Public Domain
Kuykendall, Dan
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unknown - Public Domain
Rajniss, Ferenc, 1893-1946
Image from Wikimedia Commons
Antonio Macipe Samper - Public Domain
Ruiz Zorrilla, Manuel, 1833-1895
Image from Wikimedia Commons
unknown - Public Domain
Woodbridge, Samuel Merrill, 1819-1905