Original vintage oil and gas advertising foldout for the A. O. SMITH CORP Of Milwaukee, Wi. Drilling And Production, Pipeline, Refining And Petro-chemicals, Marketing And Distribution. Casing, Electric Motors, Gasoline Pumps, Heat Exchangers, Line Pipe, Meters, Pressure Vessels, Water Heaters, Welding Electrodes, Welding Machines. Old 1959 petroleum trade magazine Supplement Foldout. Would Look Fantastic Matted And Framed.