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Elliott & Fry - Public Domain
ServiceAT - CC BY-SA 3.0
Photomechanical print after Bassano. - CC BY 4.0
unknown - Public Domain
Victorcouto - Public Domain
Not given - Public Domain
various - Public Domain
Unidentified (Ensian published by University of Michigan) - Public Domain
Abremmer - CC BY-SA 3.0
Northmetpit - Public Domain
Brady-Handy Photograph Collection (Library of Congress) - Public Domain
original uploader - Public Domain
Public Domain
Taken by Flickr user ioerror, Jacob Appelbaum - CC BY-SA 2.0
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Engels, Friedrich, 1820-1895
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Lapine, James.
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Hartley, David, 1705-1757
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Elliott & Fry - Public Domain
Palmer, Herbert E. (Herbert Edward), 1880-
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Johnson, Luther, 1939-
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ServiceAT - CC BY-SA 3.0
Press, William H.
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Photomechanical print after Bassano. - CC BY 4.0
Pavy, F. W. (Frederick William), 1829-1911
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unknown - Public Domain
Blok, Aleksandr Aleksandrovich, 1880-1921
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Pinkney, Edward Coote, 1802-1828
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unknown - Public Domain
King, A. F. A. (Albert Freeman Africanus), 1841-1914
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Davis, Horace, 1831-1916
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Victorcouto - Public Domain
Melo, Francisco de 1597-1651
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Smart, Jacob E., 1909-2006
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Dannenberg, Konrad 1912-2009
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Not given - Public Domain
David I, King of Scotland, approximately 1082-1153
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various - Public Domain
Burns, E. L. M. (Eedson Louis Millard), 1897-1985
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Unidentified (Ensian published by University of Michigan) - Public Domain
Piaget, Jean, 1896-1980
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Abremmer - CC BY-SA 3.0
Rankine, Claudia, 1963-....
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Allan, David, 1744-1796
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Northmetpit - Public Domain
Wilson, Ernest Henry, 1876-1930
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Hayman, Francis, 1708-1776
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Himes, Chester B., 1909-1984
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Schlink, Bernhard
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Brady-Handy Photograph Collection (Library of Congress) - Public Domain
Chapin, Chester W. (Chester William), 1798-1883
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original uploader - Public Domain
Abbott, Edith, 1876-1957
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Howell, Charles Augustus, 1840?-1890
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Public Domain
Rogers, William Barton, 1804-1882
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Blood, Thomas, 1618?-1680
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Taken by Flickr user ioerror, Jacob Appelbaum - CC BY-SA 2.0
Dyson, Freeman J.
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Powers, Caleb, 1869-1932