In the early days, people had to use special airmail stamps on letters specified to travel by airplane, rather than train or truck. Many postage stamps have featured airplanes.
Study these photographs and look for the characteristics of each airplane. Here are some of the differences and similarities:
Jenny biplanes.
Curtiss Jenny JN-4H
- The top wing is longer than the lower wing.
- The guide wires are prominent on the top of the upper wing.
- The pilot used the rear cockpit; the airmail service used the forward cockpit for a cargo hold.
de Havilland biplane.
de Havilland DH-4
- The two wings are equal in length.
- The engine appears to hang a few inches below the fuselage.
- The pilot used the rear cockpit; the airmail service used the forward cockpit for a cargo hold.
Junkers-Larsen JL-6 monoplane.
Junkers JL-6
- The Junkers JL-6 is a monoplane (an airplane with one wing).
- To the rear of the cockpit is an enclosed cabin with enough room for passengers and the cargo hold.
