Original oil and gas trade magazine vintage ad for TEXAS INSTRUMENTS, INCORPORATED, Industrial Instrumentation Division. Main office and plant was located at 3609 Buffalo Speedway, Houston, TX. TI Geophysical Instrumentation Spans The Industry from Its Infancy! Eugene McDermott co-founded Geophysical Service Inc, the first independent geophysical company to specialize in reflection seismograph surveys. This organization is now Texas Instruments, and G.S.I. is its petroleum exploration subsidiary. HR High Resolution Reflection Seismograph; VLF Very Low Frequency Refraction Seismograph; 7000B All Purpose Seismograph; 8000 Transistorized Seismograph; magneDISC, Disc-type Magnetic Recording System; LLI Log Level Indicator; seisMAC, Seismic Magnetic Automatic Computer; VIP, Variable Intensity Plotter; S-36 Refraction Geophone; land and marine seismometers; and the famous Worden Gravity Meters. This unique 1959 old petroleum oilfield drilling industry magazine advertisement would look fantastic matted and framed.