-40%
United Airlines First Flight Denver Colorado Airport - Tucson Arizona - 1981
$ 0.92
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Description
In early 1981 United Airlines announced it would inaugurate separate nonstop service on June 12, 1981on the Denver to Houston, San Francisco to Houston, Denver to Phoenix, San Francisco to Phoenix and
Denver to Tucson routes, utilizing Boeing 727 aircraft.
This cover was
carried on the June 12, 1981 inaugural United Airlines flight from the
Denver, Colorado Airport Mail Facility to Tucson, Arizona
(where it was backstamped) and is listed in the The American Air Mail Catalogue as UA-D133Sf.