Original oil and gas trade magazine vintage ad for THE RALPH M. PARSONS COMPANY of Los Angeles, CA. In Petroleum Processing Look to Parsons for Performance Backed by Experience on Which Customers can Draw for the Kind of Engineering Construction Know How That Results in Getting the Job Done with Efficiency, and in a Better Performing Completed facility. This unique old 1962 petroleum process refining industry equipment and construction magazine advertisement would display beautifully matted and framed.