Eckstein's and Busby's Patent Circulator was the first circulator. This document is from Charles Hood's A Practical Treatise on Warming Buildings by Hot Water, Steam, and Hot Air, Fifth Edition, 1879. The first edition of Mr. Hood's book appeared in London in 1837.
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...