1937 Yunnan-Tibetan Christian Mission at Yea Chi (15 Sep) to USA, f.w. SYS 25c, tied by Yunnan Yea Chi cds. Transit Likiang (23 Sep),
1937 Yunnan-Tibetan Christian Mission at Yea Chi (15 Sep) to USA, f.w. SYS 25c, tied by Yunnan Yea Chi cds. Transit Likiang (23 Sep), Kunming (4 Oct), Hokow (6 Oct), Hanoi (7 Oct), Haiphong (8 Oct).1937.9.15 滇藏基督教會封自葉枝寄美國,貼孫像2角5分,銷雲南葉枝三格點線日戳。9.23經麗江,10.4經昆明,10.6經河口,10.7經河內,10.8經海防。