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Schmid, Renate - CC BY-SA 2.0
US Government Printing Office - Public Domain
Rudolf Ganz - Public Domain
The National Archives UK -
Thomas Good -
Editor: Jaci Cutler - Public Domain
ak_mardini - CC BY-SA 2.0
T. Rodger - Public Domain
Marian Albright Schenk - Public Domain
unknown - Public Domain
Lesula - CC BY-SA 3.0
Nv8200p - CC BY-SA 3.0
Szczesny Factory / Selectra -
US gov - Public Domain
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Fries, Elias Magnus, 1794-1878
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Schmid, Renate - CC BY-SA 2.0
Moody, R. V., 1941-
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Gilpin, William, 1813-1894
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Barrett, James W. (James William), Sir, 1862-1945
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US Government Printing Office - Public Domain
Nygaard, Hjalmar, 1906-1963
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Rudolf Ganz - Public Domain
Koller, Rudolf, 1828-1905
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Haya de la Torre, Víctor Rául 1895-1979
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The National Archives UK -
Sharpe, Alfred, 1853-1935
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Thomas Good -
Klonsky, Michael
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Veblen, Thorstein, 1857-1929
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Lamoureux, Lucien, 1888-1970
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Editor: Jaci Cutler - Public Domain
Evans, Richard L. (Richard Louis), 1906-1971
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Hammond, John Hays, 1888-1965
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ak_mardini - CC BY-SA 2.0
Papert, Seymour.
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T. Rodger - Public Domain
Donaldson, James, Sir, 1831-1915
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Savitt, Jan
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Xceron, Jean, 1890-1967
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Marian Albright Schenk - Public Domain
Mather, Stephen Tyng, 1867-1930
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unknown - Public Domain
Bradford, William, 1590-1657
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Lesula - CC BY-SA 3.0
Cherry, Neneh
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Kalisch, Isidor, 1816-1886
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Sackville, Victoria Josephine Sackville-West, Lady, 1862-1936
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Romanoff, Dimitri, Prince, 1926-
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Nv8200p - CC BY-SA 3.0
Tippit, J.D., 1924-1963
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Szczesny Factory / Selectra -
Szczesny, Stefan, 1951-....
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Smart, Christopher, 1722-1771
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US gov - Public Domain
Pryor, David, 1934-
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Loder, Kate, 1825-1904
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Degrand, P. P. F. (Peter Paul Francis), 1787-1855
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Brangwyn, Frank, 1867-1956