In the 1930s, the Graf Zeppelin made its first airmail delivery to the Americas. It was a spectacular si...
https://www.neatorama.com/2017/03/20/The-Zeppelin-Stamps-That-Enraged-1930s-Collectors/
The Zeppelin Stamps That Enraged 1930s Collectors...
The Suicide Club: Early American Airmail Pilots
In 1918, airplanes were still a new concept, and outside of a few stunt promotions, were only used for war and for delivering mail. The US Army encourage the Post Office Department to buy their surplus planes after World...
https://www.neatorama.com/2016/06/17/The-Suicide-Club-Early-American-Airmail-Pilots/
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