In the Western Union in the 30s of the 20th century worked 14 thousand couriers delivering telegrams. In 1866, Sibley ordered the engineers to develop a Western Union telegraph system of stock quotes in real time. 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. Before transition to remittances Western Union company rendered services on sphere of cable communication. 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.