In the Western Union in the 30s of the 20th century worked 14 thousand couriers delivering telegrams. The presence of Western Union Gold Card at the client greatly simplifies the process of further processing of money transfers of and reduces the operation time for the sending of money, as the "Gold Card" is a carrier of the personal information about the client. In 1920, Western Union has implemented the world's first transmission of images over the ocean. In the 30's of the twentieth century, Western Union has become the world's largest telegraph company. Another invention of Western Union - time synchronization. In October 1871 the company has implemented the world's first telegraph money order. After a century money transfers have become a major source of income for Western Union.