In the 30's of the twentieth century, Western Union has become the world's largest telegraph company. In 1933, by the Western Union Company were invented "singing telegrams". 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. In the 1910-1920 years. Western Union is actively engaged in researching, innovating in the field of data transmission.