Original roofing trade vintage catalog for GRID FLAT SLAB CORPORATION. Main office was located at 761 Dudley Street, Boston, MA. Constructors of Floors and Roofs. Grid System Roofing and flooring made with removable steel domes. Used in Brighton High School, Boston, MA. O'Connell & Shaw Architects, and Brighton Fire Station, Ralph T. Jackson, Architect. Unbound from a large 1931 architectural catalog, this unique old one page technical brochure would display beautifully matted and framed. A fantastic addition to your retro roofing and flooring construction library.