Original electrical trade vintage catalog for CONTINENTAL-DIAMOND FIBRE COMPANY, was located in Newark, DE. Manufacturers of electrical insulating materials for your insulation problems. Vulcanized fibre, Dilecto, Micabond, Insulation, Vulcoid and Celoron. In sheets, rods and tubes. Disbound from a large 1943 architect construction materials book, this unique old three 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.