1947 USA (18 Sep) to Harbin, returned to sender due to civil war. US 10c airmail stationery cover, ied by Los Angeles wavy line d.s.
1947 USA (18 Sep) to Harbin, returned to sender due to civil war. US 10c airmail stationery cover, ied by Los Angeles wavy line d.s. Transit Shanghai (22 Sep), Changchun (26 Sep) but applied with “Mail route to destination blockaded return to sender” cachet due to liberation of Harbin. Returned to USA via Shenyang (28 Sep). Cover opened out for display.1947.9.18 美國寄哈爾濱。10分航空郵簡，銷洛杉磯機戳。9.22經上海，9.26經長春。因解放哈爾濱而鈐 “Mail route to destination blockaded, return to sender”（前途受阻 退回原寄）指示戳。9.28經瀋陽退回美國。封剖開以作展示。
