Original insulation trade vintage catalog for NEW ENGLAND MICA COMPANY, was located in Waltham, MA. Manufacturers of Nemcoite insulation, super-nemcoite bonded mica, amber mica segment plate for every insulating use. Resistant to repeated or continuous subjection to temperatures of redness. Disbound from a large 1944 electrical construction materials book, this unique old one page technical specifications brochure would display wonderfully matted and framed. A marvelous addition to your retro electrical insulation library.