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photo by Fred. Riise - Public Domain
unknown - Public Domain
George Grantham Bain Collection (Library of Congress). - Public Domain
Jan Vilímek - Public Domain
Norris Galpin Osborn, author. No picture credit. Book published in 1920, subject deceased in 1899 - Public Domain
Carl Wilhelm Vollgraff (?) - CC BY-SA 4.0
U.S. Government Printing Office - Public Domain
Jean-Pierre Dalbéra - CC BY 2.0
Rochester Institute of Technology -
Fernando B. - Public Domain
Talmoryair - CC BY-SA 3.0
Bassano ltd -
Mathew Brady Levin Corot Handy - Public Domain
Public Domain
Julienmorvan - CC BY-SA 3.0
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photo by Fred. Riise - Public Domain
Heiberg, J.-L. (Johan Ludvig), 1854-1928
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Hutton, Barbara, 1912-1979
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unknown - Public Domain
Michaux, André, 1746-1802
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unknown - Public Domain
Griffin, Edward Dorr, 1770-1837
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George Grantham Bain Collection (Library of Congress). - Public Domain
Beard, Charles Austin, 1874-1948
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Hertz, Gustav, 1887-
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Little, J. C. (Jesse Carter), 1815-1893
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Jan Vilímek - Public Domain
Preissová, Gabriela Sekerová, 1862-1946
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Hickman, Howard, 1880-1949
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Morris, Edward Patrick, Baron, 1859-1935
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Norris Galpin Osborn, author. No picture credit. Book published in 1920, subject deceased in 1899 - Public Domain
Bromley, Isaac H. (Isaac Hill), 1833-1898
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Carl Wilhelm Vollgraff (?) - CC BY-SA 4.0
Huizinga, Johan, 1872-1945
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Stokes, Montfort, 1762-1842
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U.S. Government Printing Office - Public Domain
Ray, John H. (John Henry), 1886-1975
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Fontebasso, Francesco, 1707-1769
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Jean-Pierre Dalbéra - CC BY 2.0
Legris, Manuel.
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Rochester Institute of Technology -
Haas, Ernst, 1921-1986
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Hill, Octavia, 1838-1912
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Debali, Francisco José 1791-1859
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unknown - Public Domain
Cook, Frederick Albert, 1865-1940
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La Liberte, Alfred
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Fernando B. - Public Domain
Ferreira, Benigno, 1846-1920
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Talmoryair - CC BY-SA 3.0
Eilat, Abraham, 1939-
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Higby, William, 1813-1887
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Bassano ltd -
Mills, Florence, 1896-1927
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Mathew Brady Levin Corot Handy - Public Domain
Spencer, George Eliphaz, 1836-1893
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Potter, Louis Joseph Antoine de, 1786-1859
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Public Domain
Edwards, Henry W. (Henry Waggaman), 1779-1847
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Blennerhassett, Harman 1765-1831
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Julienmorvan - CC BY-SA 3.0
Bonitzer, Pascal