Original oil and gas trade magazine vintage ad for HUDSON ENGINEERING CORPORATION. The main office was located at Fairview Station, Houston, TX. Combin-aire Cooling for refinery using combination of minimum water and maximum air. Presently installed cooling towers may be used by installing structure with fin-tube elements and fans immediately adjacent with air for the elements being drawn across the water near the bottom of the tower, increasing the capacity and cooling the air for use in the fin-tube elements. Used at Cosden Petroleum Corporation, Big Spring, Texas, Petroleos Mexicanos in Reynosa, Tamaulipas, Mexico and Pakistan Petroleum, Sui gas field, West Pakistan. This unique 1959 old petroleum refining process industry magazine advertisement would display beautifully matted and framed. Two page gatefold advertisement.