Text from original exhibit label: "Airmail commemorating fifteen years of airmail service. Ironically the government would again fly the mail as they did in 1918, when regular airmail service began in this country, just eight months later."Creation Date1933-05-15SubjectAir mail serviceNational Cachet Publishing ServiceExtent1 envelope ; 17 x 9 cmOriginal FormatenvelopesBibliographic CitationThe Founders of American Aerospace Exhibit Collection/The Museum of FlightRightsIn copyright
[Air mail envelope commemorating 15th anniversary of air mail service], [2022-00-00-16_text_002]. Museum of Flight Digital Collections, accessed 16/12/2025, https://digitalcollections.museumofflight.org/nodes/view/23261