Historical sketch of the electric telegraph : including its rise and progress in the United States
Alexander Jones's 1852 history of the electric telegraph, issued by G.P. Putnam in New York for general readers following the new industry. Wood engravings show bench apparatus in three-quarter view: brass binding posts under glass bells, coil-wound electromagnets, clockwork registers with weight drives, and circuits traced as thin lines to battery jars and bare rock faces.
