Original electrical trade vintage catalog for COLLYER INSULATED WIRE COMPANY. Main office and factory was located at 245 Roosevelt Avenue, Pawtucket, RI. Manufacturers of Varnished Cambric cables and wires, suprene type RR non-metallic underground network, neutral supported overhead service, self supporting aerial, and service drop and entrance cables are shown. Disbound from a large 1949 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.