On June 1, 1959 American Airlines added Boston to its jet service to Los Angeles. Flying Boeing 707 planes, a record eastbound time of 4 hours and 46 minutes was established on the first flight.

This cover was carried on the inaugural Boeing 707 flight from Los Angeles, California to Boston, Massachusetts (where it was backstamped) and is listed in the Jet Age Flights Section of The American Air Mail Catalogue as J-76.

The Boston Postmaster autographed the cover.