In the early forties of the 20th century, Western Union has used the first time a commercial intercity microwave transmission system. In the 30's of the twentieth century, Western Union has become the world's largest telegraph company. To obtain the Golden card can any client of Western Union, committing money transfers on this system more than 1 time per year. Getting the card is issued at the time of making of the next transfer. In 1933, by the Western Union Company were invented "singing telegrams". 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.