Original oil and gas trade magazine vintage ad for THE KOCH ENGINEERING COMPANY, INC. was located at 321 West Douglas Avenue, Wichita, KS. As an Independent consulting firm, we can furnish you unbiased studies on the economic condition of your refinery, capital investments, evaluate which processes best fit your refining operation. This unique 1950 old petroleum products refining magazine advertisement would display beautifully matted and framed. Nice graphics.