Original oil and gas trade magazine vintage ad for INDEPENDENT EXPLORATION COMPANY. Main office was located at The Esperson Building, Houston, TX. Pictured is Mr A. D. Dunlap, Party Chief of Crew 3, worked his way up from helper, shooter, observer, computer. Oil surveys with unsurpassed accuracy. They know their jobs from the ground down. This unique 1950 old oilfield petroleum industry magazine advertisement would display beautifully matted and framed. Nice graphics.