Air Mail Featuring the Boeing Model 40B October 1, 2008

Businesses were interested in moving information quickly, over long distances and the prospect of "air mail" was very attractive. Over a period of just a few years, from 1918 until the mid-1920s, the United States Post Office, entrepreneurs, and airplane designers created a system to rapidly move mail throughout the nation. The resulting developments in aviation made it feasible and practical for the newly formed commercial airlines to transition from hauling sacks of mail to carrying cabins full of passengers.