Original oil and gas trade magazine vintage ad for GENERAL GEOPHYSICAL COMPANY. Main office was located in the Houston Club Building, Houston, Texas. Small but significant. The minute atom abruptly revolutionized scientific theories with its significance. Generals automatic plotter and computer, The Geopac, has also revised modern thinking. This compact unit presents an entirely new concept in seismic interpretation. This unique 1958 old oilfield petroleum drilling magazine advertisement would display beautifully matted and framed. Great graphics.