Original plumbing trade vintage catalog for POWER PIPING CORPORATION. (subsidiary of Blaw Knox Company) Main office and factory was located at 829 Beaver Avenue, Pittsburgh, PA. Manufacturers of Blaw-Knox Automatic Sprinkler Systems. Products include Star Automatic Sprinkler Head, Wet Pipe System, Dry Pipe System. Used by Cutler-Hammer Company, Tubize Artificial Silk Company, Warner Bros. Picture Company, Hershey Chocolate Corp, Brooks Bros. Department Store, Industrial Rayon Corp, Norfolk & Western Railway, P. Lorillard Tobacco Company, Commonwealth-Edison, Fisher Brother, Owens-Illinois Glass Corp and more. Unbound from a large 1938 architectural catalog, this unique old one page technical brochure would display beautifully matted and framed. A fantastic addition to your retro plumbing collection.