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NN - Public Domain
Jean Auguste Dominique Ingres - Public Domain
unknown -
unknown - Public Domain
anonymous - Public Domain
Paul Sinner - Public Domain
Midnightdreary - CC BY 3.0
Haeseler - Public Domain
Nadar - Public Domain
Photographer-Friedman-Abeles, New York. - Public Domain
Wendylinjohnson - CC BY-SA 3.0
Stjepan Kovačević - Public Domain
Casacolumbia - CC BY-SA 3.0
ABC Television - Public Domain
Alan Light on flickr - CC BY 2.0
Public Domain
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NN - Public Domain
Mohl, Julius, 1800-1876
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Jean Auguste Dominique Ingres - Public Domain
Gatteaux, Edouard 1788-1881
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unknown -
Thomson, William M. (William McClure), 1806-1894
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Sifton, Clifford, Sir, 1861-1929
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unknown - Public Domain
Rothwell, Walter H. (Walter Henry), 1872-1927
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anonymous - Public Domain
Clement XIV, Pope, 1705-1774
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Paul Sinner - Public Domain
Oehler, Gust. Fr. (Gustav Friedrich), 1812-1872
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unknown - Public Domain
No, Kum-Sok
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unknown - Public Domain
Bayly, Thomas Haynes, 1797-1839
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Midnightdreary - CC BY 3.0
Armistead, George, 1780-1818
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Günther, Mizzi, 1879-1961
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Clement, Paul D.
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Hall, Nigel, 1943-...
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Haeseler - Public Domain
Churchill, Winston, 1871-1947
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Nadar - Public Domain
Guillaume, Albert, 1873-1942
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Sonck, Lars Eliel, 1870-1956
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Photographer-Friedman-Abeles, New York. - Public Domain
Prentiss, Paula, 1939-
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unknown - Public Domain
Small, Albion W., 1854-1926
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unknown - Public Domain
Littlejohn, De Witt Clinton, 1818-1892
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Wendylinjohnson - CC BY-SA 3.0
Murray, Daniel, 1768-1852
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Barbeau, Marius, 1883-1969
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Stjepan Kovačević - Public Domain
Kvaternik, Eugen, 1825-1871
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Otero, Miguel Antonio, 1859-1944
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Casacolumbia - CC BY-SA 3.0
Califano, Joseph A., Jr., 1931-
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ABC Television - Public Domain
Brown, Georg Stanford
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Haeckel, Ernst, 1834-1919
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Alan Light on flickr - CC BY 2.0
Barks, Carl, 1901-2000
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Andreini, Francesco, approximately 1548-1624
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Albani, Francesco, 1578-1660
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Public Domain
Butler, William M. (William Morgan), 1861-