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:en:James Grant (author) - Public Domain
José Suárez-Biblioteca Nacional de España - CC BY-SA 4.0
Office of War Information - Public Domain
YellowGranite - CC BY-SA 4.0
Salvatore Giaconia (1825-1899) - CC BY-SA 4.0
unknown - CC0 1.0
David Shankbone - CC BY-SA 3.0
CBS Television via the Bureau of Industrial Service. Networks, studios, and program sponsors often used either ad or publicity agencies for distribution of publicity material during the 1950s and 1960s. The Bureau was widely used for this purpose in the industry and was a division of ad agency Young & Rubicam. - Public Domain
unknown - Public Domain
XCalPab - CC BY-SA 3.0
Nv8200p - CC BY-SA 3.0
Lucarelli - CC BY-SA 3.0
Office of the Surgeon General - Public Domain
Trabajo propio. Reproducción de una fotografía de autor desconocido. - Public Domain
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:en:James Grant (author) - Public Domain
Glover, John Hawley, Sir, 1829-1885
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McInnes, W. B. (William Beckwith), 1889-1939
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Laughton, Charles, 1899-1962
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Geisel, Ernesto
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José Suárez-Biblioteca Nacional de España - CC BY-SA 4.0
Izquierdo, Rafael, 1820-1882
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Brücke, Ernst Wilhelm von, 1819-1892
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Hill, John Philip, 1879-
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Office of War Information - Public Domain
Stettinius, Edward R., Jr. (Edward Reilly), 1900-1949
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Anthing, Frederic, 1753-1805
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YellowGranite - CC BY-SA 4.0
Jeffreys, Gina
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Smith, Cordwainer, 1913-1966
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Alexander III, Emperor of Russia, 1845-1894
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Salvatore Giaconia (1825-1899) - CC BY-SA 4.0
Veneziano, Antonio, 1543-1593
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unknown - CC0 1.0
Elwes, John, 1714-1789
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Little, Arthur D. (Arthur Dehon), 1863-1935
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David Shankbone - CC BY-SA 3.0
Phillips, Carl, 1959-
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Gilbreth, Frank Bunker, 1868-1924
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CBS Television via the Bureau of Industrial Service. Networks, studios, and program sponsors often used either ad or publicity agencies for distribution of publicity material during the 1950s and 1960s. The Bureau was widely used for this purpose in the industry and was a division of ad agency Young & Rubicam. - Public Domain
Kirby, Durward
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unknown - Public Domain
Jordan-Smith, Paul, 1885-1971
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XCalPab - CC BY-SA 3.0
Hewitt, Godfrey M.
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Fort, Franklin W. (Franklin William), 1880-
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unknown - Public Domain
Melcher, Frederic Gershom, 1879-1963
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unknown - Public Domain
Longhi, Roberto, 1890-1970
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Darsonval, Lycette, 1912-
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Crawford, M. J. (Martin Jenkins), 1820-1883
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Nv8200p - CC BY-SA 3.0
Tippit, J.D., 1924-1963
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Lucarelli - CC BY-SA 3.0
Dalla, Lucio
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Pritchard, Edward William, 1825-1865
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Office of the Surgeon General - Public Domain
Forwood, W. H. (William Henry), 1838-1915
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Trabajo propio. Reproducción de una fotografía de autor desconocido. - Public Domain
Abril, Xavier, 1905-1990