In 1920, Western Union has implemented the world's first transmission of images over the ocean. Another invention of Western Union - time synchronization. In 1995, First Financial Management was acquired by First Data Corp. (the deal amounted to $ 7 billion), and Western Union Financial Services became a subsidiary of First Data. July 3, 1884 the company's shares were included in the calculation base for the newly created stock index Dow Jones Transportation Average. In October 2006 the company made an initial public offering of shares on the New York Stock Exchange, becoming independent from First Data company. 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 1914 Western Union engineers invented the first payment card - a prototype of the modern credit card. In 1849, Selden and Sibley, the founders of the future Western Union, created the New York State Printing Telegraph Company.