Image from Wikimedia Commons
unknown - Public Domain
Georges Biard - CC BY-SA 3.0
Henderson, Clayton W - Public Domain
Abubakar - CC BY-SA 3.0
Public Domain
Ignaz Gaugengigl - Public Domain
Unknown (Bain News Service, publisher) - Public Domain
Gampe - CC BY-SA 3.0
Project Gutenberg. - Public Domain
Anonymous - Public Domain
Uncredited - Public Domain
William Owen (1769-1825) - Public Domain
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Silvestre, Israël, 1621-1691
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unknown - Public Domain
Álvarez de Castro, Mariano, 1749-1810
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Georges Biard - CC BY-SA 3.0
Martin, Jacques, 1933-2007
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King, Samuel Ward, 1786-1851
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unknown - Public Domain
Palmer, Alice Freeman, 1855-1902
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Henderson, Clayton W - Public Domain
Dresser, Paul, 1858-1906
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Sedaine, 1719-1797
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Abubakar - CC BY-SA 3.0
Balewa, Abubakar Tafawa, Sir, 1912-1966
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Baratier, J. P. (Jean Philippe), 1721-1740
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Public Domain
Willkomm, Moritz, 1821-1895
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Arnold, Edward, 1890-1956
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Ignaz Gaugengigl - Public Domain
Fitz, Reginald H. (Reginald Heber), 1843-1913
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unknown - Public Domain
Elliott, Elizabeth Shippen Green
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Hale, James Tracy, 1810-1865
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Carstares, William, 1649-1715
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Waring, Edward John, 1819-1891
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unknown - Public Domain
Wilder, John Thomas, 1830-1917
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Holifield, Chet 1903-
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Unknown (Bain News Service, publisher) - Public Domain
Hofmann, Josef, 1876-1957
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Lorm, Hieronymus, 1821-1902
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Gampe - CC BY-SA 3.0
Hiorns, Roger, 1975-....
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Project Gutenberg. - Public Domain
Cooke, Bates, 1787-1841
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Anonymous - Public Domain
Besterman, Theodore, 1904-1976
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Public Domain
Calhoun, William B. (William Barron), 1795-1865
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Saryan, Martiros, 1880-1972
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Uncredited - Public Domain
Ismail, Usmar, 1921-1971
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La Billardière, Jacques Julien Houtou de, 1755-1834
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William Owen (1769-1825) - Public Domain
Scott, William, Baron Stowell, 1745-1836
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Sima, Qian, approximately 145 B.C.-approximately 86 B.C.
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unknown - Public Domain
Ward, Genevieve, 1838-1922