This document outlines the Marsh System of Vapor Heating from JAS. P. Marsh Corporation of Chicago. It also contains information about the Marsh Boiler Return Trap and the Marsh No. 11 Air Trap. Thanks to Denise Kersting for getting this literature and sharing it with us.
The Improved Webster Type "R" System of Steam Heating is a service bulletin from Warren Webster and Company (The Pioneers of Vacuum Steam Heating), established in 1888.
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.
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...