These two postcards are of Japan’s Nishiyama oil field. The two-view postcard (postmarked in 1927) shows “Nippon’s Nishigasaki Rotary No. 1 Flowing.” This same view is captioned, “Well about one mile from Nishiyama field, the oldest field in Japan. All gasoline produced in Japan is refined from oil in this field. Note the thatch covering over derrick timbers” (Mining and Oil Bulletin, June, 1920, p.407).