Original industrial trade vintage catalog for MONONGAHELA TUBE COMPANY, was located in PIttsburgh, PA. Manufacturers of Armco American Ingot Iron boiler tubes, pipe and merchant casing. The process, characteristics, sizes and specs are provided. Disbound from a large 1916 industrial catalog, this unique old one page technical specifications brochure would display wonderfully matted and framed. A marvelous addition to your retro industrial equipment library. Page is detached and may contain a small amount of residual glue on edge.