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Open Knowledge Foundation - CC BY 2.0
Public Domain
Gil Megidish - CC BY 2.0
Steve Covault - CC BY-SA 3.0
unknown - Public Domain
not stated - Public Domain
Anonymous - Public Domain
Secretaría de Cultura de la Ciudad de México - CC BY-SA 2.0
Mariusz Kubik, http://www.mariuszkubik.pl - CC BY-SA 3.0
Library of the London School of Economics and Political Science -
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Lovely, Louise, 1896-1980
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Moore, Ronald D.
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Open Knowledge Foundation - CC BY 2.0
Ellis, John, 1946-....
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Public Domain
Foster, Ephraim Hubbard, 1794-1854
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Erskine, James Elphinstone, 1838-1911
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Gil Megidish - CC BY 2.0
Bluth, Don.
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Herbert, Henry William, 1807-1858
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Steve Covault - CC BY-SA 3.0
Souther, J. D.
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unknown - Public Domain
Carrasquilla, Tomás, 1858-1940
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Sahagún, Bernardino de, -1590
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Lessing, Doris, 1919-2013
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Robinson, Ken, 1946-
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not stated - Public Domain
Ellis, Job Bicknell, 1829-1905
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Nabors, Jim, 1930-
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Anonymous - Public Domain
Goulding, Alfred
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Shannon, Ethel, 1898-1951
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unknown - Public Domain
Binet, Jacques Philippe Marie 1786-1856
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Englefield, Henry, Sir, 1752-1822
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Vigneault, Gilles, 1928-....
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Wilson, William Lyne, 1843-1900
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Brown, Edgar A. (Edgar Allan), 1888-1975
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unknown - Public Domain
Diebolt, George.
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Rojas Paúl, Juan Pablo, 1826-1905
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Antoninus, Saint, Archbishop of Florence, 1389-1459
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Secretaría de Cultura de la Ciudad de México - CC BY-SA 2.0
Mercado, Patricia
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Mariusz Kubik, http://www.mariuszkubik.pl - CC BY-SA 3.0
Ficowski, Jerzy
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Harrison, Burton Norvell, 1838-1904
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Chifley, J. B. (Joseph Benedict), 1885-1951
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Library of the London School of Economics and Political Science -
Marshall, T. H. (Thomas Humphrey)
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Anonymous - Public Domain
Espoz y Mina, Francisco, 1781-1836