XEE4408820 Progress of science: representation of Guglielmo Marconi (1874-1937) and Edouard Branly (1844-1940), at the time of the installation of the receiver of TSF (T.S.F. or Wireless Telegraphy) at the top of the Eiffel Tower to ensure communications with the city of Casablanca. Illustration taken from ??????Le petit journal?????? 24/11/1907. by Unknown Artist; Private Collection; (add.info.: Progress of science: representation of Guglielmo Marconi (1874-1937) and Edouard Branly (1844-1940), at the time of the installation of the receiver of TSF (T.S.F. or Wireless Telegraphy) at the top of the Eiffel Tower to ensure communications with the city of Casablanca. Illustration taken from ??????Le petit journal?????? 24/11/1907.); Stefano Bianchetti; out of copyright.