Original oil and gas trade magazine vintage ad for SOUTHWEST INDUSTRIES, INC. of Houston, TX. Southwest Unitizes and Packages Pipeline Size, Slow Speed Compressors in Three Base Designs at Savings in Cost and Delivery Time. Pictured is one of three Ingersoll Rand 26-KVS compressors, unitized on two skids for British American Oil Producing Company's injection operations in Grady County, Oklahoma. This unique 1962 old petroleum pipeline equipment magazine advertisement would display beautifully matted and framed.