This document contains a series of interesting articles by Mills and LaTart of Revere Copper and Brass about radiant heat with copper tubing. It is not dated, but is most likely from the late-1940s. Thanks to Jim Walls for finding and scanning this one.
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).