Arco's Ventilorad Radiator Booster was an electric heat booster for ordinary radiator. Here is the literature from 1937, along with a letter to wholesale distributors from A. R. Herske, Vice President and General Sales Manager of the American Radiator Company. It essentially turns a radiator into a fan-coil unit.
This document contains the complete illustrated instructions for installing the Hercules Steam and Hot Water Heating System, a boiler manufactured by Sears, Roebuck and C...
This document contains the manufacturer's instructions for the HB Smith Series M450L Mills Water-Tube Boiler for automatic firing with oil or gas (Steam, Vapor, or Water ...
This document contains the jacket assembly instructions for the HB Smith Series 45 Mills Boiler (circa 1979).