Here is an old brochure about home heating in 1916. Thanks to Thomas M. Long, P.E. for scanning and sharing this document. He writes, "I don't remember where I got this, because I've had it in a file for a number of years. The reason I kept it is because we lived in a duplex about 30 years ago that had one of these gravity furnaces, although it had been converted to burn fuel oil. This was the 'central' heating system and included a square cast-iron grate in the living room floor. Somehow the warm air worked its way up the stairs and managed to keep at least part of the house reasonably warm."
Here is the original Installation and Operating Instructions and Parts List for The H.B. Smith Company's Oil Fired Cast Iron Hot Water Boilers (No. OHB-13W). This is esti...
The Henry Ford Museum in Dearborn, MI has an interesting hot-water heating system. Take a look at the radiators below. They are from the Shaw-Perkins Manufacturing Compan...
We estimate that this cast-iron boiler catalog from The Peerless Heater Company in Boyertown, PA is from the 1980s or 1990s.