Source Source 2
A collection: The Yumen oilfield, 1950-1954
Source Source 2
by Covell Meyskens
Source Source 2
near 成都南路 Source
June, 1950 Source
盐津县 Source
Hami area, April 1950 Source
Issued in Chengdu. This stamp was added to post office items to handle the rise in prices due to inflation. Source
Source