Original oil and gas trade magazine vintage ad for WARNER PETROLEUM COMPANY. Main office and factory was located in The Arcade Building, St. Louis, MO. Ready to Make Spot Shipment of All Petroleum Products. Associated Producing and Refining Corporation. Unique 1921 petroleum refining and process industry magazine advertisement. Approximate size 9 x 12 inches. (The scan shows a slight pink tint that is not in the actual ad). Slight old mailing crease down center of ad.