A lot of great guesses but I stumped everyone this time!
In the photo above, people flock to a helicopter that has landed in front of Pasadena City Hall on July 8, 1946.
This was during the first week of an experimental program by which airmail flown by plane from all over the world to the Los Angeles Municipal Airport would be delivered by helicopter to several cities throughout L.A. County, including Pasadena, Pomona, Santa Monica and Long Beach.
Intended to save time, the L.A. County program was the first of its kind in the nation.
Pasadena Star-News -- July 4, 1946:
Owing to the holiday and final adjustments to the required equipment, the inauguration of helicopter mail service in and out of Pasadena has been postponed from Saturday to Monday, when service is expected to go into effect sometime in the early afternoon.Here's an envelope from 1948, flown by helicopter to Los Angeles Municipal Airport and then on to Cleveland.
Particulars regarding address and rates may be obtained by calling the information clerk at the main post office.
Many thanks to Pasadena Museum of History and Pasadena Public Library.
