O-E Vapor System Manual
This manual was created by O-E Specialty Manufacturing Co. and outlines how to install the "O-E" Perfect System, which is a Vapor Vacuum heating system.
Stephen J. Gold's Boiler Patent
Stephen Gold was the inventor of the first radiator, the "mattress" radiator. Here is is patent for his boiler, which appeared nine years later. Much thanks to Gerry Gill for sharing this wonderful document with us.
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