Original hardware trade vintage catalog for NATIONAL LOCK COMPANY. Main office was located in Rockford, IL. Manufacturers of locksets builders hardware with distinctive beauty and positive security. Easy installation and time proven quality. No. 441 441D Entrance Key Lock pictured. No 446, 446D, 443, 443D Key Control, 442, 442, 445, 445D Patio Lock, 444 Privacy and 448 Passage locks are discussed. General specs provided. Escutcheons pictured on back page, along with hinges, cabinet hardware and latches. Disbound from a large 1956 home builders hardware catalog, this unique old four page technical brochure would display wonderfully matted and framed. Nice cover graphics. A marvelous addition to your retro hardware library. Pages are detached and may contain a small amount of residual glue on edge. Form 2085.