Original electrical trade vintage catalog for CONTINENTAL-DIAMOND FIBRE COMPANY, of Newark, DE. Manufacturers of Dilecto laminated Phenolic Plastic, Vulcanized Fibre, Molded Celoran, Vulcoid, Micabond, Dilectene are featured. C-D Engineered electrical insulation materials with application chart. Information designed to help you determine in a general way which material is best for your intended specific use. Disbound from a large 1944 architect construction materials book, this unique old four page technical specifications brochure would display wonderfully matted and framed. A marvelous addition to your retro electrical equipment library. Pages are loose and contains a small amount of residual glue on edge.