Original electrical trade vintage catalog for THE BELL TELEPHONE SYSTEM. American Telephone & Telegraph Company. Planning for Telephones in Residence and Buildings. Service Entrances, Office, Loft and Public Buildings, Hotels, Hospitals and Apartments. Wiring diagrams for cables and wires. Pictured are built-in public telephones. Disbound from a large 1938 architect construction materials book, this unique old four page technical brochure would make a marvelous addition to your retro telecom equipment library.