Original heating trade vintage catalog for McGRAW ELECTRIC COMPANY, was located at 5201 West 65th Street, Chicago, IL. (Clark Water Heater Division). Manufacturers of home water heaters. Advantages of Electricity in Water Heating, Black Heat Element, features, cost of operation, installation details provided. Unbound from a large 1938 architectural catalog, this unique old one page technical brochure would display beautifully matted and framed. Nice graphics. A fantastic addition to your retro heating equipment collection.