Original oil and gas trade magazine vintage ad for C. L. MAGUIRE PETROLEUM COMPANY. Main office was located in the McCormick Bldg, Chicago, IL and the Whitehall Bldg, New York City, NY. Serving A Principle. Maguire Tested Oil Tag on tank car shipments. Railroad cars. This unique 1921 old petroleum refining transportation industry magazine advertisement would look sensational matted and framed. (The scan shows a slight pink tint that is not in the actual ad). On the reverse side is an ad for THE PURE OIL COMPANY of Columbus, OH. Producers, Refiners, Marketers. Old petroleum refining industry advertisement. Approximate page size 9 x 12 inches.