In 1935, Western Union has put into operation first intercity fax communication. In 1866, Sibley ordered the engineers to develop a Western Union telegraph system of stock quotes in real time. Payment systems are one of basic elements of infrastructure of e-commerce. 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. 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.