French inventor (1844–1940) primarily known for his involvement in wireless telegraphy. ALS signed “E. Branly,” one page, 5.25 x 8.25, Electrotherapy letterhead, October 24, 1903. Letter to an unidentified gentleman. In full (translated): “I am forwarding a letter addressed to me by Mr. Joseph Planche, doctor of law, very distinguished former student of Catholic Institute, of a very religious and high ranking family in Verdun. See what you can do for his protege.” In fine condition, with a mild shade of toning and a couple light creases. RRAuction COA.
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