In the early forties of the 20th century, Western Union has used the first time a commercial intercity microwave transmission system. 1980 - for the first time in the history of Western Union revenues from money transfers exceeded the income from the telegraph service. In 1877, starting from September, New York City residents began to have the opportunity to check the time on clock with the "time ball", located on the roof of constructed in the same year a new corporate headquarters - Western Union Building. 1970 - a new service called In 1884 Western Union has become a joint-stock company and was brought to the stock exchange. The company has entered in the first American stock index Dow Jones.