Original wall trade vintage catalog for UNITED STATES GYPSUM COMPANY. Main office was located in Chicago, IL. The Red Book of Building Materials. Topics discussed include Plasters, Gypsum Plasters, General Data, Plastering Bases, Rocklath The Fireproof Lath, Wallboards, Sheetrock, Gyplap, Master Specifications, Installations, and more. Numerous images, illustrations, product details and architect specs are provided. Unbound from a large 1938 architectural catalog, this unique old forty-eight page technical specifications brochure would display wonderful matted and framed. Nice cover graphics. A terrific addition to your retro wall construction library. Pages are detached and may contain a small amount of residual glue on edge.