Original flooring trade vintage catalog for STRUCTURAL GYPSUM CORPORATION. General office was located in Linden, NJ. Manufacturers of Gypsteel precast flooring and ceiling. Specifications, typical installations, advantages, component parts, installation and types of roofs are discussed in detail. Unbound from a large 1931 architectural catalog, this unique old ten page technical brochure would display beautifully matted and framed. A marvelous addition to your retro flooring construction library. Pages are detached and contain a small amount of residual glue on edge.