Original tile trade vintage catalog for NATIONAL FIREPROOFING CORPORATION. Main office was located in the Fulton Building, Pittsburgh, PA. Manufacturers of a complete line of structural clay tile comprises units to meet every building need in structures of every kind. Natco interior and exterior walls, fireproofing, floors and roofs discussed in detail. Numerous illustration, images and specification charts are provided. Unbound from a large 1931 architectural catalog, this unique old fifty-four page technical specifications brochure would display fantastic matted and framed. Nice cover graphics. A marvelous addition to your retro clay tile library. Pages are detached and may contain a small amount of residual glue on edge.