In the 30's of the twentieth century, Western Union has become the world's largest telegraph company. In 1914 Western Union engineers invented the first payment card - a prototype of the modern credit card. 1970 - a new service called In 1879 Western Union left the telephone business after losing a lawsuit against Alexander Graham Bell - the patent holder on the phone. 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.