Stamped: "First Flight - United States Air Mail – Honolulu, Oahu, T.H. [Territory of Hawaii], USA."Creation Date1934-10-08SubjectBlackman, L. G.Air mail serviceOriginal Formatenvelopesfirst flight coversBibliographic CitationThe William E. Boeing Sr. Papers/The Museum of FlightRightsIn copyright
[First flight air mail cover addressed to Colonel L. G. Blackman], [2005-10-06-B_text_223]. Museum of Flight Digital Collections, accessed 16/12/2025, https://digitalcollections.museumofflight.org/nodes/view/8831
