American First Flight United Nations New York - San Francisco - Boeing 707

Description

American Airlines inaugurated nonstop Boeing 707 service from New York to San Francisco on November 1, 1959.
This cover was carried on the inaugural Air Mail Route 4 flight from the United Nations Post Office in New York to San Francisco, California
(where it was backstamped)
and is listed in the Jet Age Flights Section of The American Air Mail Catalogue as J-320u.