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unknown photographer - CC BY-SA 3.0
Kzirkel - CC BY-SA 3.0
Schlesinger -
U.S. Government Printing Office - Public Domain
Moran Shoub - CC BY-SA 4.0
Mathew Brady - Public Domain
Holger Motzkau -
Ambroise Tardieu - Public Domain
Greg Hernandez - CC BY 2.0
unknown - Public Domain
Civil War Photograph Collection (Library of Congress) - Public Domain
Bain - Public Domain
Mathew Brady Levin Corot Handy - Public Domain
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Prout, Samuel, 1783-1852
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Peabody Awards - CC BY 2.0
Sanders, Marlene
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Wyndham, Wadham, Sir, 1609-1668
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unknown photographer - CC BY-SA 3.0
Nordhagen, Rolf, 1894-
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Welch, Niles, 1888-1976
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Kzirkel - CC BY-SA 3.0
Wood, Gordon S.
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Schlesinger -
Hochstetter, Ferdinand von 1829-1884
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Barros, João de, 1496-1570
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Baillie, John, 1886-1960
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U.S. Government Printing Office - Public Domain
Gilbert, Jacob H., 1920-1981
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Moran Shoub - CC BY-SA 4.0
Baruch, Adam.
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Mathew Brady - Public Domain
Brown, Neill Smith, 1810-1886
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Holger Motzkau -
Le Clézio, J.-M. G. (Jean-Marie Gustave), 1940-
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Ambroise Tardieu - Public Domain
Saussure, Horace-Bénédict de 1740-1799
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Himmler, Heinrich, 1900-1945
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Engvick, William
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McNaughton, A. G. L. (Andrew George Latta), 1887-1966
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Butler, Thomas S. (Thomas Stalker), 1855-1928
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Greg Hernandez - CC BY 2.0
Jackson, Anne, 1926-
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unknown - Public Domain
Angus, H. F. (Henry Forbes), 1891-1991
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Civil War Photograph Collection (Library of Congress) - Public Domain
Grierson, Benjamin Henry, 1826-1911
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Gray, Hanna Holborn
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Jode, Pieter de, 1606-approximately 1674
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Herglotz, Gustav, 1881-1953
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Driesch, Hans, 1867-1941
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unknown - Public Domain
Poor, Henry W. (Henry William), 1844-1915
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Bain - Public Domain
Winter, William, 1836-1917
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Mathew Brady Levin Corot Handy - Public Domain
Vest, George Graham, 1830-1904
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Harwood, E. C. (Edward Crosby), 1900-....
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Elijah ben Solomon, 1720-1797