CHINA 1934, EURASIA First flight Peking - Taiyuan - Loyang - Hankow - Changsha Canton, First flight Canton - Hankow and First flight Hankow - Peking, 2 nice covers from May 1st
6; Flugpost; FLUGPOST INTERNATIONAL; Alphabetisch nach Ländern
6; Airmail; AIRMAIL INTERNATIONAL; Allgemein