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 229
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 … Part F. Prof.WheatstonesPermutatingKey-boardand only-Instrumentat the date ofthe Partnership. PartG. Mr. Cooke and Prof. Wheatstone. Discharger and Secondary Circuit. April, 1837. Part H. Mr. Cooke. Second Galvanometer Telegraph, (with return wire) April, 1837, prior toPartnership. Drawing V. J.…
Wheatstone, Charles, Sir, 1802-1875 · Telegraph
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