Railway Educational Bureau Instruction Paper Unit N. 27

1950 Railway Educational Bureau Instruction Paper, Unit N. 27 addressing the subject of Diesel Locomotive Operation – The OK Steam Generator, manufactured by Vapor Heating Corporation of Chicago.

Soft cover publication consisting of 25 numbered pages and one fold-out loose insert illustration page providing Figures 1 through 4, setting the location of various valves, lever, regulators, and switches.

In good condition, with some smudges and paperclip rust stains on a couple of the pages, but no rips/tears or missing pages.  Copyright 1950 by D.C. Buell.