Original door trade vintage catalog for GENERAL PLYWOOD CORPORATION. Main office was located in Louisville, KY. Manufacturers of Gibraltar and Kentucky Colonel flush doors. When there can be no question about quality. Veneers, frames, gluing, finishing, panel construction and cores. The doors that pass the elephant test. Chart with approximate door weights provided. This unique 1954 old four page technical specifications brochure would make a marvelous addition to your architectural design library. Pages are loose and contain a small amount of residual glue on edge.