Cachet attributed to George Austed of San Francisco, California. He advertised in the Airpost Journal between the late 1930s to the mid-1960sFirst Trip (Trip 1) Northbound, May 3, 1941%u2014%u201425,107 pieces carried.First Trip (Trip 2) Southbound, May 3, 1941%u2014%u201422,746 pieces carried.