The single-wire telegraph revolutionized long distance communication but it was not the brainchild of one inventor, Samuel Morse. His colleagues and employees--specifically Ezra Cornell and Joseph Henry--made crucial contributions. Examining the careers of the three men and the key events, this book presents Morse as primarily a businessman and consolidator of ideas who, frequently in conflict with his associates, sought to present the telegraph as a uniform system under his sole imprimatur. The battle between Morse and Cornell over the invention of the magnetic relay was central to the drama. What emerges is a complex portrait of three ambitious and brilliant innovators and the age in which they lived.

Drawing upon more than two decades of research in secondary and documentary publications as well as archival materials from the United States, the Soviet Union, and Britain, Saul reveals a wealth of new detail about contacts between the two countries between the American Revolutionary War and the purchase of Alaska in 1867.