Original oil and gas trade magazine vintage ad for WARREN PETROLEUM CORPORATION, of Tulsa, OK., Export Terminals: Corpus Christi, TX., Port Arthur, TX., Baytown, TX., Texas City, TX and WARRENGAS, Houston, TX., and San Pedro, CA. Natural Gasoline. Does the PEP in your motor fuel take a summer-long vacation? This unique 1955 old petroleum products refining process industry magazine advertisement would look sensational when matted and framed. Approximate size 9 x 12 inches.