Original oil and gas trade vintage ad for CARDWELL MANUFACTURING. COMPANY, INC. Main office and factory was located in Wichita, KS. Shown is a letter from Mr. J. E. Tye Treadway, from the Sunnyland Contracting Company, Inc. of Rayne, Louisiana. Another satisfied user of Cardwell's Successful Slim Hole Rig. Cardwell Model D. Unique 1953 old oilfield petroleum drilling industry equipment magazine advertisement. Two-page gatefold advertisement.