The electric telegraph: was it invented by Professor Wheatston e? (1856)
Cooke, William Fothergill, 1806-1879 · London, Sold by W. H. Smith and Son · leaf 223
h April, 1841. y- Gentlemen, We cordially acknowledge the correctnessof the facts stated in the above document, and begto express our grateful sense of the very friendlyand gratifying manner in which you have recordedV* your opinion of our joint labours, and of the valueof our invention. We are,… … Drawing I. Part A. Prof. Moncke. Prior to March,1836. PartB. Mr. Cooke. FirstGralvanometer Tele^aph,with six wires. March, 1836. Detector. ORIGIN OF Parts C and E
Wheatstone, Charles, Sir, 1802-1875 · Telegraph
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