US Airmail Stamps
Inaugurated in the early 20th Century, airmail was a premium service which required paying special postal rates. U.S. airmail stamps document the early history of aviation commerce - from biplanes to Zeppelins to flying boats. The first airmail stamp - a 24-cent stamp that covered postage from New York to Washington - was issued in May 1918. The stamp pictured the plane that carried the mail – the Curtiss Jenny – and is widely recognized...