Jarecki Radiators (1890)
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.
Atmospheric Pressure or So Called "Vapor" Systems
This document about Atmospheric Pressure and Vapor Systems is from Audel's Plumber's and Steamfitter's Guide No. 3, which appeared in 1925.
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