In the Western Union in the 30s of the 20th century worked 14 thousand couriers delivering telegrams. 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 1849, Selden and Sibley, the founders of the future Western Union, created the New York State Printing Telegraph Company. In 1856, in 7 years after the foundation of New York State Printing Telegraph Company, the company changed its name to Western Union Telegraph Company.