The electric telegraph: was it invented by Professor Wheatston e?
William Fothergill Cooke's 1856 London pamphlet, sold by W. H. Smith and Son, arguing his own priority over Charles Wheatstone in inventing the electric telegraph, aimed at engineers and the scientific press. The plates are fine-line engineered diagrams of coils, needle instruments, batteries and keys, labelled by figure number and joined by looping wires that cross the sheet.
