Original oil and gas trade magazine vintage ad for CITIES SERVICE OIL COMPANY of New York City, NY. Steps up Progress in Petroleum in East Chicago, Indiana. The refinery there is now topped by a huge new unit of the latest type for catalytic refining. Improvements extend to the refinery's new gasoline treating equipment, purification unit, and gas recovery system. Users of petroleum products for industry, commercial transport, farming and motoring can all be assured of receiving top quality when ordering from Cities Services. This unique 1951 old one page petroleum refinery equipment magazine advertisement would display beautifully matted and framed.