Original concrete trade vintage catalog for LOCKSTRIP MANUFACTURING CORPORATION, was located at 36-09 Vernon Boulevard, Long Island City, NY. Manufacturers of T.M.C. Lockstrips for Terrazzo, Composition, Linoleum and Cement Floors. Metal Dividing Strips manufactured in brass, nickel silver and zinc. Disbound from a large 1938 building material construction brochure, this unique old four page technical specification brochure would be a marvelous addition to your retro architecture design and engineering library.