In the Western Union in the 30s of the 20th century worked 14 thousand couriers delivering telegrams. 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. Each money transfer is protected with control number, that allows you to track and to ensure prompt payment of money specified by you person. The first offices of company were located in the Reynolds Arcade building in Rochester, New York. The sign above the main entrance to the building -