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Unknown, Bassano Ltd -
http://www.knowla.org/author/132/ - CC BY-SA 4.0
Ned Scott, photographer (Columbia Pictures) -
John Singleton Copley - Public Domain
Louis-Joseph Fanelli-Semah (peintre), Napoléon Thomas (graveur), Bernard et Frey (lithographes). - Public Domain
NBC Television - Public Domain
Tiwaribharat - CC BY-SA 3.0
unknown - Public Domain
Marcovalerio marletta - Public Domain
MavsFan28 - CC BY-SA 4.0
SarahStierch - CC BY 4.0
Lubos Motl - Public Domain
Hopwood after George Romney - Public Domain
Vishnugsr - CC BY-SA 3.0
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Cleyn, Franz, 1590?-1658
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Mersenne, Marin, 1588-1648
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Unknown, Bassano Ltd -
Lane, William Arbuthnot, 1856-1943
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Agrell, Johan, 1701-1765
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Wallace, Dillon, 1863-1939
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http://www.knowla.org/author/132/ - CC BY-SA 4.0
Grau, Shirley Ann
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Ned Scott, photographer (Columbia Pictures) -
Korda, Zoltán, 1895-1961
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John Singleton Copley - Public Domain
Warren, Mercy Otis, 1728-1814
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Buch, Walter, 1883-1949
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Wordsworth, Charles, 1806-1892
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Louis-Joseph Fanelli-Semah (peintre), Napoléon Thomas (graveur), Bernard et Frey (lithographes). - Public Domain
Dupin, M. (André-Marie-Jean-Jacques), 1783-1865
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NBC Television - Public Domain
Loudon, Dorothy
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Tiwaribharat - CC BY-SA 3.0
Vājapeyī, Aśoka (1941- ).
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unknown - Public Domain
Magsaysay, Ramon, 1907-1957.
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Hopper, William, 1915-1970
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Kofoid, Charles A. (Charles Atwood), 1865-1947
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Ware, James, Sir, 1594-1666
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Marcovalerio marletta - Public Domain
Vinay, Ramon
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Ringgold, Samuel, 1796-1846
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Fiske, George, 1835-1918
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Von Tilzer, Albert
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MavsFan28 - CC BY-SA 4.0
Thomas, Jonathan Taylor
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Still, A. T. (Andrew Taylor), 1828-1917
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Chichester, John, -1569
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SarahStierch - CC BY 4.0
Foyt, A. J., 1935-
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Lubos Motl - Public Domain
Duff, M. J.
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McClurg, James, approximately 1746-1823
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Adams, Claire, 1900-1978
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Hopwood after George Romney - Public Domain
Cumberland, Richard, 1732-1811
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Vishnugsr - CC BY-SA 3.0
Reddy, D. Raj (Dabbala Raj), 1937-