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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 241
r^ First Patent.June 12, 1837. Second Patent.April 18, 1838. … BlackwallTelegraph. lb \ PROGRESS OF MECHANICAL TELEGRAPH FROM MARCH 183CWheatstone, Charles, Sir, 1802-1875 · Telegraph
Internet Archive · Northeastern University Library · Public Domain Mark 1.0. Free to use for anything.
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