Original bathroom trade vintage catalog for KEYSTONE SHOWER DOOR COMPANY. Main office and plant was located at 3550 North 16th Street, Philadelphia, PA. Manufacturers and Designers of Bathtub Enclosures and Shower Doors. Materials, models, craftsmanship. Disbound from a large 1938 construction equipment book, this unique one-page bathroom technical data specification brochure would display wonderfully matted and framed. It would be a marvelous addition to your retro architecture and engineering library.