Original door trade vintage catalog for CALDER MANUFACTURING COMPANY. Main office was located in Lancaster, PA. Manufacturers of overhead sectional garage doors for garages, factories, warehouses, gas stations, barns, truck terminals, service shops and boat houses. Typical installations of wedge tight doors are shown. General features of all 1-Car doors provided, includes Sturdy, Leveline, and Flush. Large Wedge Tight doors for industry and commerce shown, special features and detailed specs. Jamb construction and electric operators information included. This unique 1954 old twelve page architectural technical specifications brochure would make a marvelous addition to your retro design and engineering library. Pages are loose and contain a small amount of residual glue on edge.