The Post Office Department poster advertized airmail service proclaiming “Use Air Mail. Give Wings to Your Letters.” Several airmail envelopes bearing 6-cent postage stamps wing their way across a hilly landscape and speed their way to their destination, “Mr. & Mrs. America, Anywhere, USA.” From 1918 to 1977, the domestic airmail service and rate structure offered postal customers the option to send their mail via airplanes. More expensive than a first class letter, businesses were the initial adopters to choose airmail for transport of time-sensitive items. As the spending power of Americans’ grew so did the network of airmail routes, and as rates fell, more people opted for airmail service for both their special and regular correspondence.