1919 (5 Feb) Large official cover from the Beile of Dörbet Oirat to the Governor of Sinkiang, Yang Tseng-hsin, applied with official seal.
1919 (5 Feb) Large official cover from the Beile of Dörbet Oirat to the Governor of Sinkiang, Yang Tseng-hsin, applied with official seal. The Governor of Sinkiang Yang had extensive correspondence with the local leaders in Kobdo to gain their supports since Altay became part of Sinkiang. This cover was probably by Chinese courrier within Sinkiang (until reaching Kuchengtze) and Yizhan within Mongolia. Cover roughly opened at top.1919.2.5 大型公文封，由杜爾伯特左翼多羅札薩克貝勒寄新疆省長楊增新，鈐官印。自1918年阿勒泰劃歸新疆，楊增新時常與科布多地區各部落領袖通信以爭取人心。此封應是經新疆境內之中國信差送至古城子，再經蒙古之驛站送遞。封頂打開。
