[LB062638], Letter from Thomas Alva Edison to Bishop Gutta Percha Co, October 1896
https://edisondigital.rutgers.edu/document/LB062638
Transcription
Bishop Gutta Percha Coy- 426 East 25th Street New York. Dear Sirs:- Can you make a somewhat flexible cord consisting of two Gutta Percha Wires twisted together, the Copper wire can be two or three strands No 36 copper wire for core. I suppose the Gutta Percha will have to be very thick and in layers as I want the cord to carry the current from an induction coil giving eight inch spark. The cords will be about fifteen feet long and there will be quite a demand for them if they can be made, Wire with only 1/16 Gutta on side does not stand. An early reply will greatly oblige. Yours truly Thos. A. Edison R[andolph].