Original oil and gas trade magazine vintage ad for WESTINGHOUSE AIR BRAKE COMPANY, of Milwaukee, WI. Power-Packed Pipeline Station uses Le Roi L3460's to Provide Plenty of Low-Cost Pumping Power. Portable air compressors, tractair, stationary air compressors, air tools, engines. Unique 1955 old oilfield petroleum industry pump power equipment advertisement. On the reverse side is a fractional page ad for SCOTCHRAP PIPE INSULATION made by MINNESOTA MINING & MANUFACTURING COMPANY of St. Paul, MN. New Improved Scotchrap First in the Field Still the Leader! 3M. Unique 1955 old petroleum industry magazine advertisement. Approximate page size 9 x 12 inches.