Seismograph Service Corp 1955 Oil Well Velocity Logging Vintage Ad

Original vintage magazine ad, SEISMOGRAPH SERVICE CORPORATION, of Tulsa, OK., Subsidiaries: SSC of Canada, SSC of Colombia, SSC of Mexico, SSC of Venezuela, SSC Seismograph Service Limited - England, Compagnie Francaise de Prospections Sismique. "Continuous Velocity Logging A Sound Method of Examining Your Well." Seismic and Gravity Surveys, Pilot Crews, Lorac, Continuous Velocity Logging. Shown is the data of a test conducted by Magnolia Petroleum Company. Old 1955 petroleum industry advertisement. On the reverse side is Mack Trucks, Empire State Building, New York City, NYC, NY. "Its's engineered to get the job done right." Pictured is G.L. Fife, Jr., of G.L. Fife & Son, Natchez, Mississippi with his Mack Truck. approximate size 9 x 12 inches.