The Propulsive Principles of Steam Locomotives 1924 Book by Socrates is a valuable addition to any railway enthusiast's collection. This paperback book, part of the Railway Manuals series, offers insights into the inner workings of steam locomotives from 1924. By National union of railways this cool collectible book includes insets of plans and drawings on trace paper. In a very used state indicating someone has carried this with them for many years. Lovely piece of history
