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Public Domain
Government Printing Office - Public Domain
U.S. Department of State - Public Domain
Civil War glass negative collection (Library of Congress) - Public Domain
unknown - Public Domain
United States Department of Agriculture -
Al pie de la imagen figuran los datos de su autor. - Public Domain
Benjamin Robert Haydon - Public Domain
Unknown; scanned by 天竺鼠 - Public Domain
A.H. Palmer - Public Domain
US Government Printing Office - Public Domain
Thomon - Public Domain
Dick Thomas Johnson - CC BY 2.0
*:File:Erich_Mendelsohn.jpg - CC BY 3.0
Internet Archive Book Images - Public Domain
Mark Coggins - CC BY 2.0
USG - Public Domain
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Public Domain
Roberts, Arthur, 1852-1933
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Virtanen, A. I. (Artturi Ilmari), 1895-1973
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Government Printing Office - Public Domain
Hasse, Adelaide Rosalia, 1868-1953
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U.S. Department of State - Public Domain
Hormats, Robert D.
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Civil War glass negative collection (Library of Congress) - Public Domain
Williamson, R. S. (Robert Stockton), 1824-1882
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Public Domain
Alfano, Franco, 1875-1954
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Public Domain
Wall, James W. (James Walter), 1820-1872
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Butler, Samuel, 1612-1680
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unknown - Public Domain
Johnston, Mary, 1870-1936
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Eriksen, Edvard, 1876-1959
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McLaughlin, James C. (James Campbell), 1858-1932
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United States Department of Agriculture -
Sherrod, Shirley, 1948-
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Foulk, George Clayton, 1856-1893
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Gorton, John, 1911-2002
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Baily, Francis, 1774-1844
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Al pie de la imagen figuran los datos de su autor. - Public Domain
Torquemada, Juan de, 1388-1468
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Benjamin Robert Haydon - Public Domain
Jeremie, John, Sir, 1795-1841
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Poe, O. M. (Orlando Metcalfe), 1832-1895
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Unknown; scanned by 天竺鼠 - Public Domain
Yu, Youren, 1879-1964
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A.H. Palmer - Public Domain
Hamerton, Philip Gilbert, 1834-1894?
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US Government Printing Office - Public Domain
Gray, Kenneth J. (Kenneth James), 1924-
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Thomon - Public Domain
Mundelein, George William, 1872-1939
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Dick Thomas Johnson - CC BY 2.0
Ōbayashi, Nobuhiko 1938-
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*:File:Erich_Mendelsohn.jpg - CC BY 3.0
Mendelsohn, Erich, 1887-1953
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Pratt, Matthew, 1734-1805
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Benn, Gottfried, 1886-1956
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Internet Archive Book Images - Public Domain
Lorenzo, Monaco, 1370 or 1371-1425
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Mark Coggins - CC BY 2.0
Grafton, Sue
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Public Domain
Notovitch, Nicolas, 1858-
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USG - Public Domain
Champe, John, 1752-1798