Thanks to Frank "Steamhead" Wilsey for finding and scanning this for us. He writes, "John Mills was a rather prolific inventor, who most of us know for the Mills boilers (still made until recently!), and the Mills overhead piping system. But he also came out with his own unique radiator design, which is mentioned in passing in Susan Reed Stifler's book The Beginnings of a Century of Steam and Water Heating. Check out the valve and piping arrangements!"
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).