In 1935, Western Union has put into operation first intercity fax communication. Another invention of Western Union - time synchronization. Payment systems are one of basic elements of infrastructure of e-commerce. In 1849, Selden and Sibley, the founders of the future Western Union, created the New York State Printing Telegraph Company. 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.