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 227
Dkawing II. Origin ofMechanicalTelegraph. March, 1836,Mr. Cooke. PartD.Mr. Cooke. Origin of the Escapement Principle. August, 1836. i, c Part C. Joq 2 B … Drawing III. ^~m Parte. Mr. Cooke. FirstMechanicalTelegraph. March, 1836. Alarum.March, 1836. Part E. Mr. Cooke. Second Mechanical Telegraph, with two wires. Feb. 1837. Drawing IV. Part G
Wheatstone, Charles, Sir, 1802-1875 · Telegraph
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