Original heating trade vintage catalog for STERLING ENGINEERING COMPANY.  Main office and plant was located at 3778 North Holton Street, Milwaukee, WI.

Manufacturers of Steam Heating Control Equipment. Products include Thermostatic Trap No 6A, Float and Thermostatic Trap, Boiler Return Trap, Radiator Supply Valves, Vents, Vacuum Pumps, Condensation Pumps, and Instant Water Heating Systems are all featured. Has numerous product images with detailed descriptions, illustrations, applications and specifications provided. Unbound from a large 1935 architectural product catalog, this unique old two-page brochure would display beautifully matted and framed. Nice graphics. A fantastic addition to your vintage construction materials library. Pages are loose.