Original oil and gas trade magazine vintage ad for CARDWELL MANUFACTURING COMPANY, INC. Main office and plant was located in Wichita, Kansas. The Incomparable Trailerig. For 50,000-foot drilling with a 4 1/2-inch drill pipe and 10,000-foot workover jobs with tubing, the Cardwell Trailerig is in a class by itself. This unique 1954 old oilfield petroleum drilling equipment magazine advertisement would display beautifully matted and framed. Two-page gatefold advertisement.