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Fraserg58 - CC BY-SA 4.0
Chester Harding - Public Domain
original uploader - Public Domain
Matthew H. Jouett (1788–1827) - Public Domain
Chris Darling - CC BY 2.0
anonymous photographer - Public Domain
unknown - Public Domain
National Photo Company. - Public Domain
user at project - CC BY-SA 3.0
Joseph Kriehuber - Public Domain
Public Domain
Tucker Collection - Public Domain
Félix, Paris - Public Domain
Charles S. Forbes - Public Domain
Smithsonian National Postal Museum - Public Domain
Anonymous - Public Domain
Lesley - CC BY-SA 2.0
Richard Cooper - CC BY-SA 3.0
William Farley Peck - Public Domain
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Fraserg58 - CC BY-SA 4.0
Gillis, Ann, 1927-
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Huntington, William Reed, 1838-1909
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Joslyn, Allyn, -1981
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Marshall, William, 1924-2003
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Chester Harding - Public Domain
Cuffe, Paul, 1759-1817
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original uploader - Public Domain
Bain, Andrew Geddes, 1797-1864
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Matthew H. Jouett (1788–1827) - Public Domain
Shelby, Isaac, 1750-1826
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Chris Darling - CC BY 2.0
Ramsey, Mary
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anonymous photographer - Public Domain
Bréville, Pierre de, 1861-1949
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unknown - Public Domain
Jacobs, Friedrich, 1764-1847
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National Photo Company. - Public Domain
Richards, Charles Lenmore, 1877-1953
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user at project - CC BY-SA 3.0
Graziani, Girolamo, 1604-1675
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Bourassa, Henri, 1868-1952
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Mason, Thomas Monck
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Kantor, Tadeusz, 1915-1990
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Joseph Kriehuber - Public Domain
Dreyschock, Alexander, 1818-1869
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Public Domain
Breuer, Josef, 1842-1925
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Tucker Collection - Public Domain
Millais, John Everett, 1829-1896
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Shaw, Guy Loren, 1881-1950
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Porter, Robert Ker, Sir, 1777-1842
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unknown - Public Domain
Dixon, Roland Burrage, 1875-1934
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Félix, Paris - Public Domain
Sully, Mariette
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Charles S. Forbes - Public Domain
Howe, Mary, 1882-1964
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Smithsonian National Postal Museum - Public Domain
Gronouski, John A. (John Austin), 1919-1996
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unknown - Public Domain
Erikson, Erik H. (Erik Homburger), 1902-1994
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Anonymous - Public Domain
Montgomery, L.M. (Lucy Maud), 1874-1942
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Lesley - CC BY-SA 2.0
Jones, Terry, 1942-....
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unknown - Public Domain
Wunderlich, C. A. (Carl August), 1815-1877
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Richard Cooper - CC BY-SA 3.0
Hoban, Russell
Image from Wikimedia Commons
William Farley Peck - Public Domain
Greenleaf, H. S.