Original 1941 industrial trade vintage catalog for the JOHNSON SERVICE COMPANY.  Main office and factory was located in Milwaukee, WI.

Manufacturers of Automatic Temperature & Humidity Control Systems, applied to all types of Heating, Cooling, Ventilating, Air Conditioning Installations and Industrial Processes.

Products include Johnson Thermostats, Johnson Humidity Control, Johnson Valves, Johnson Dampers and Switches, all are fully featured.

Has numerous product images, description and application provide product details.

Unbound from a large rare 1941 Industrial Catalog, this unique old two-page technical brochure would display beautifully matted and framed. Nice graphics. A fabulous addition to your retro industry library. Pages are loose.