Original oil and gas trade magazine vintage ad for NORTHWEST ENGINEERING COMPANY.  Main office was located at 1513 Field Building, 135 South La Salle Street, Chicago, IL. The Workhorse of the Pipelines. The Northwest 25-D and 25-D 18 Ton Lifting Crane. Feather Touch Control, Uniform Pressure Swing Clutches. This unique 1962 old oilfield petroleum pipe line industry crawler crane equipment magazine advertisement would display beautifully matted and framed. Nice graphics.