How the Telegraph Changed the WorldPaperback - 2015
"Invented in the 1830's, the telegraph soon became indispensable. By 1851 there were more than 50 companies providing telegraphic service in the United States alone. This book describes the global impact of the telegraph from its advent to its eventual eclipse by the telephone four decades later"-- Provided by publisher.
Publisher: Jefferson, North Carolina : McFarland & Company, Inc., Publishers, 
Characteristics: vii, 212 pages ; 23 cm