Original oil and gas trade magazine vintage ad for JOHN A. ROEBLING SONS CORPORATION. of Trenton, NJ. Use Royal Blue Wire Rope on your offshore rig. To settle for anything less at this stage would be pound foolish. It is made from the toughest rope wire ever produced, Type 1105 extra high strength improved plow steel. This unique 1959 old oilfield petroleum drilling equipment magazine advertisement would display beautifully matted and framed.