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EDISON, THOMAS ALVA. Letter signed ("Thomas A. Edison") to the President of Alagoas [Brazil], n.p., n.d. [c. 1880?]. 1 1/4 pages, folio, in a bold secretarial hand, on lined legal paper. With a dramatic "umbrella" signature. Fine.

Details
EDISON, THOMAS ALVA. Letter signed ("Thomas A. Edison") to the President of Alagoas [Brazil], n.p., n.d. [c. 1880?]. 1 1/4 pages, folio, in a bold secretarial hand, on lined legal paper. With a dramatic "umbrella" signature. Fine.

EDISON'S SEARCH FOR THE FILAMENT "TO PERFECT THE ELECTRIC LIGHT BULB"

Edison asks the president of Brazil to allow a colleague to search Brazil for a fibre suitable for filaments in the incandescent light bulb: "Permit me to recommend to your distinguished consideration the bearer of this letter, Mr. John C. Branner, my friend and co-laborer, a gentleman already known in your country in connection with the Imperial Geological Survey. In my endeavors to perfect the electric light and bring it into practical everyday use, a certain kind of vegetable fibre has been found necessary. It is the thing most needed for the perfection of my invention and believing your country to be the richest on the globe in natural productions, in my effort to obtain what I want, Mr. Branner will explore Brazil. Being convinced that the encouragement held out by your wise Emperor to all who visit Brazil in pursuit of science will be ably seconded by his distinguished Ministers, I feel your Excellency will do all in your power to contribute to the success of Mr. Branner's mission..."
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