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anonymous - Public Domain
Σ, retouched by Wugapodes - CC BY-SA 4.0
Michael Gross - Public Domain
Blmurch - CC BY 3.0
US House of Representatives Ways and Means Committee illustration - according to source information - Public Domain
Rudolf Dührkoop - Public Domain
Clinedinst, Washington DC - Public Domain
William Edward Blythe / Stellar Publishing - Public Domain
http://www.hs-augsburg.de/~harsch/Chronologia/Lspost09/Eriugena/eri_intr.html - Public Domain
Stephen Pearce - Public Domain
Erhard Schön (ca. 1491-1542) - Public Domain
Uncredited - Public Domain
Otto Wegener (1849-1922) - Public Domain
unknown - Public Domain
Jarnemec - CC BY-SA 4.0
Mathew Brady - Public Domain
Theodore C. Marceau - Public Domain
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anonymous - Public Domain
Denison, George Anthony, 1805-1896
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Σ, retouched by Wugapodes - CC BY-SA 4.0
Chomsky, Noam, 1928-
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Michael Gross - Public Domain
Natwar-Singh, K.
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Barton, Benjamin Smith, 1766-1815
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Blmurch - CC BY 3.0
Murch, Walter Scott, 1943-
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US House of Representatives Ways and Means Committee illustration - according to source information - Public Domain
Smith, William Loughton, 1758-1812
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Bugeaud, Thomas Robert, duc d'Isly, 1784-1849
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Rudolf Dührkoop - Public Domain
Harden, Maximilian, 1861-1927
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Gance, Abel.
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Clinedinst, Washington DC - Public Domain
McLean, John R. (John Roll), 1848-1916
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William Edward Blythe / Stellar Publishing - Public Domain
England, George Allan, 1877-1936
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http://www.hs-augsburg.de/~harsch/Chronologia/Lspost09/Eriugena/eri_intr.html - Public Domain
Erigena, Johannes Scotus, approximately 810-approximately 877
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Huerta, Adolfo de la 1881-1955
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Fellenberg, Emanuel von, 1771-1844
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Bowen, Francis, 1811-1890
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Alexander, Archie A. (Archie Alphonso), 1888-1958
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Lang, Viktor von 1838-1921
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Stephen Pearce - Public Domain
Maguire, Rochfort
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Sanger, Margaret, 1879-1966
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Zadek, Walter
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Erhard Schön (ca. 1491-1542) - Public Domain
Hutten, Ulrich von 1488-1523
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Uncredited - Public Domain
Noble, Ray, 1903-1978
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Otto Wegener (1849-1922) - Public Domain
Verlaine, Paul, 1844-1896
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unknown - Public Domain
Pink, Olive Muriel, 1884-1975
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Jarnemec - CC BY-SA 4.0
Hecker, Zvi, 1931-....
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Manrique, Jorge, 1440?-1479
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Mathew Brady - Public Domain
Webb, J. Watson (James Watson), 1802-1884
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Linde, Carl, 1842-1934
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Theodore C. Marceau - Public Domain
Keen, William W. (William Williams), 1837-1932
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McClintock, Barbara, 1902-1992