Original oil and gas trade magazine vintage ad for GILBERT & BARKER MANUFACTURING COMPANY. Main office and factory was located West Springfield, MA. Pictured is Liquid Systems Corp. owner, Mr. H. R. McGillivray. He states Roto-Prime Pumps are the easiest to sell. Installed them at Socony Mobil Oil Company's Peoria Marine Terminal and is providing the long, trouble-free service to our customers have learned to expect from every pump. This unique 1956 old petroleum products pump industry magazine advertisement would display beautifully matted and framed.