1980 - for the first time in the history of Western Union revenues from money transfers exceeded the income from the telegraph service. Another invention of Western Union - time synchronization. In the early 60s Western Union has put into operation transcontinental microwave system of data transmission via radio waves, completely replacing the web of telegraph poles and wires. July 3, 1884 the company's shares were included in the calculation base for the newly created stock index Dow Jones Transportation Average. In October 2006 the company made an initial public offering of shares on the New York Stock Exchange, becoming independent from First Data company. In 1914 Western Union engineers invented the first payment card - a prototype of the modern credit card. In 1849, Selden and Sibley, the founders of the future Western Union, created the New York State Printing Telegraph Company.