Original flooring trade vintage catalog for JONES & LAUGHLIN STEEL CORPORATION, was located in Pittsburgh, PA. Manufacturers of J&L Junior Beam Floors. For Residences, Schools and Other Light Occupancy Buildings. American Iron & Steel Works. Engineering Data, Table of Spacing and Installation Details provided. Disbound from a large 1916 floor materials catalog, this unique old sixteen page technical specifications brochure would display wonderfully matted and framed. Nice cover graphics. A marvelous addition to your retro flooring construction library. Pages are detached and may contain a small amount of residual glue on edge.