Original electrical trade vintage catalog for BRANDYWINE FIBRE PRODUCTS COMPANY. Main office and factory was located at 1450 Poplar Street, Wilmington, DE. Manufacturers of Hard Vulcanized Tube and Rod. Vulcanized tube and rod gives high dielectric strength and is arc resisting. Disbound from a large 1948 architect construction materials book, this unique old one page technical specifications brochure would display wonderfully matted and framed. A marvelous addition to your retro electrical equipment library.