In 1920, Western Union has implemented the world's first transmission of images over the ocean. 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. Sibley, the founder of Western Union, did not build a new telegraph lines, and persuaded the other players to join. American Telegraph Company, however, still had to buy it.