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 1933, by the Western Union Company were invented "singing telegrams". On the market was placed about 765 million of ordinary shares of the company. On the first day trading on the exchange the company's shares rose by 3.3% and the cost was $ 19.96. 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.