In the Western Union in the 30s of the 20th century worked 14 thousand couriers delivering telegrams. In the early 60s Western Union has put into operation transcontinental microwave system of data transmission via radio waves, completely replacing the web of telegraph poles and wires. In April 1851 companions registered in Albany New York and Mississippi Valley Printing Telegraph Company (NYMVPTC), which included founded two years before New York State Printing Telegraph Company. In October 2006 the company made an initial public offering of shares on the New York Stock Exchange, becoming independent from First Data company. 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 -