Original roofing trade vintage catalog for UNITED STATES GYPSUM COMPANY.  Main office and factory was located at 300 West Adams Street, Chicago, IL. The Red Book of Building Material, Roof and Floor Constructions, Fireproofing Specialties. Products include roof tiles, floor systems, partitions, columns and beam & girder fireproofing. General technical data, insulation data, sheetrock-pyrofill roof construction master specifications, Marks T system, Imbedded rail construction, pyrobar, pyrofill, are discussed. Unbound from a large 1931 architectural catalog, this unique old twenty-eight page technical specifications brochure would display beautifully matted and framed. Nice cover graphics. A marvelous addition to your retro roofing construction library. Pages are detached and contain a small amount of residual glue on edge.