Original electrical trade vintage catalog for JEFFERSON ELECTRIC COMPANY. Main office and factory was located in Bellwood, IL. Manufacturers of ballasts, mercury lamp and power transformers and fuses. Products preferred by experienced electricians for their correctness of design and uniformly high quality construction. Disbound from a large 1948 electrical construction materials book, this unique old one page technical specifications brochure would display wonderfully matted and framed. A marvelous addition to your retro electric equipment library.