This excerpt about the NIRA Window Seat Radiator for Steam and Hot Water Heating is from Facts for Fitters, a 1916 catalog from The Hunting Co.
Thank you to Frank "Steamhead" Wilsey of All Steamed Up for sharing this document 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...