blue datestamp on 1916 2c Stamped envelope (U2) postmarked Balboa Heights October 4, 1920, six-line boxed magenta cachet reading "Aviator encountered impossible weather conditions nearing Jamaica, compelling return. Mail re-dispatched by steamer", includes original typed letter from secretary in the Executive Department who typed the official letters to postal authorities in the United States and newspaper account of the flight, very fine and scarce (AAMC 1018)