Original electrical trade vintage catalog for STACKPOLE CARBON COMPANY, was located in St. Marys, PA. Manufacturers of industrial carbon brushes, contacts, resistors and switches. Brushes suitable for every type of industrial rotating machine are available in standard carbon, carbon-graphite, graphite, electro-graphite, copper copper-graphite and silver-graphite. Disbound from a large 1944 electrical construction materials book, this unique old two page technical specifications brochure would display wonderfully matted and framed. A marvelous addition to your retro electric equipment library. Pages are detached and contains a small amount of residual glue on edge.