Here are ratings for the Erie radiator from Jarecki Mfg Co Ltd. They were based in Erie, PA and their radiators appeared in issues of Domestic Engineering in the 1890s.
Here is some very good literature on the Milwaukee Valve Company's vapor heating product offering from 1935, including the MILVACO Air Line Valve, the Type "M" Boiler Return Trap, the Type "V" Thermostatic Trap, MILVACO Quick Vents, MILVACO Automatic Air Valves, and the MILVACO Air Eliminator or Float Vent. Thanks to Patrick Linhardt for scanning and sharing.
Here are ratings for the Erie radiator from Jarecki Mfg Co Ltd. They were based in Erie, PA and their radiators appeared in issues of Domestic Engineering in the 1890s.
Brian Roberts & Paul Yunnie compiled this document that contains beautiful vintage advertisements and illustrations of radiators from the mid to late 1800s and early 1900...
This document contains the story of Herman W. Nelson, founder of the Herman Nelson Corporation and the Moline Heating System (a vacuum-vapor heating system).