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's a link to a PDF of the Second Edition of the Dunham Handbook. Special thanks to Colin Rush, who found it and shared the news with us. There's no date on this one but it's most likely late-'30s. Dunham did a superb job of filling their handbooks with useful information.
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).