Original insulation trade vintage catalog for NEW ENGLAND MICA COMPANY, was located in Waltham, MA. Manufacturers of Sheet, plate for electrical insulation. Y-26 properties include odorless, high mechanical strength, moisture resistance, thin, light in weight and useful for the life of the appliance. Disbound from a large 1949 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.