Original 1941 industrial trade vintage catalog for the C A DUNHAM COMPANY.  Main office was located at 450 East Ohio Street, Chicago, IL. The factories were located in Marshalltown, Iowa and Michigan City, Indiana.

Manufacturers of Dunham Heating Service.  Pumps, Unit Heaters, Convectors and Traps.

Products include Duplex Vacuum Heating Pump, Single Vacuum Heating Pump, Model B Condensation Pumps, Unit Heaters, Convectors, Thermostatic Radiator Trap, High Pressure Trap, Medium Pressure Trap, Return Trap, Float and Thermostatic Trap, all are featured.

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

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