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unknown - Public Domain
Julian Bell (1908-1937) - Public Domain
unknown -
Georges Seguin (Okki - CC BY-SA 3.0
:w:Winvandorst - Public Domain
E.mihaescu - CC BY-SA 4.0
National Marine Sanctuaries - Public Domain
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Appleton's cyclopaedia - Public Domain
Charles Mallison - CC BY-SA 3.0
SIGMA PROJECT - CC BY 2.0
Otto von Leixner - Public Domain
Theodore C. Marceau - Public Domain
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Peano, Giuseppe, 1858-1932
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unknown - Public Domain
Caussin de Perceval, A. P. (Armand Pierre), 1795-1871
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Julian Bell (1908-1937) - Public Domain
Bell, Julian, 1908-1937,
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unknown -
Grotefend, Georg Friedrich, 1775-1853
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Nicolai, W. (Walter), 1873-1947
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Musaeus, Johannes, 1613-1681
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Griffes, Charles Tomlinson, 1884-1920
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Georges Seguin (Okki - CC BY-SA 3.0
Hamilton, Laurell K.
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Gideon, Clarence Earl
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:w:Winvandorst - Public Domain
Jeal, Tim
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E.mihaescu - CC BY-SA 4.0
Mihaesco, Eugene, 1937-...
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Sennert, Daniel, 1572-1637
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Lyon, Ben, 1901-1979
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unknown - Public Domain
Manuelito, Navajo chief, 1818-1893
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National Marine Sanctuaries - Public Domain
Abbott, Isabella Aiona, 1919-2010
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Estrées, Louis-Charles-César Le Tellier, duc d', 1695-1771
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Donner, Anders
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unknown - Public Domain
Eisenstein, Judah David, 1854-1956
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Medici, Giovanni de, 1563-1621
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Howard, Everette Burgess, 1873-1950
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Hungate, William L.
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Abel-Smith, Brian, 1926-1996
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Appleton's cyclopaedia - Public Domain
Clarke, McDonald, 1798-1842
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Charleton, Walter, 1619-1707
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Medici, Cosimo de' 1389-1464
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Charles Mallison - CC BY-SA 3.0
Leiris, Michel, 1901-1990
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SIGMA PROJECT - CC BY 2.0
Pablo, Luis de
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Snellinck, Jan
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Otto von Leixner - Public Domain
Murner, Thomas, 1475-1537
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Theodore C. Marceau - Public Domain
Otis, Harrison Gray, 1837-1917