In 1920, Western Union has implemented the world's first transmission of images over the ocean. In 1935, Western Union has put into operation first intercity fax communication. In 1877, starting from September, New York City residents began to have the opportunity to check the time on clock with the "time ball", located on the roof of constructed in the same year a new corporate headquarters - Western Union Building. In October 2006 the company made an initial public offering of shares on the New York Stock Exchange, becoming independent from First Data company. One of the common kinds of money transfer is a transfer via the international system of Western Union. In 1849, Selden and Sibley, the founders of the future Western Union, created the New York State Printing Telegraph Company. Western Union made so that the time in all of American civil services was the same. Western Union made so that the time in all of American civil services was the same.