In the early forties of the 20th century, Western Union has used the first time a commercial intercity microwave transmission system. In October 1871 the company has implemented the world's first telegraph money order. After a century money transfers have become a major source of income for Western Union. 1970 - a new service called Sibley, the founder of Western Union, did not build a new telegraph lines, and persuaded the other players to join. American Telegraph Company, however, still had to buy it.