Every once in awhile a book needs to be mentioned that relates to railroading history. One such book is one I found at the book shop at “Steamtown” in Scranton, PA. Aptly titled How A Steam Locomotive Works – A New Guide is a fine textbook on all functional aspects of steam locomotion by the author Dominic Wells published in 2015 by Ian Allan Publishing. The author begins with a simple description of creating steam in a pot before embarking on a clever description of adapting it to train locomotion, a simple but highly complex system of engineering. Expertly written with numerous illustrations this book is the reference guide for all interested in steam trains. More than 150 pages covering every important function and design of the steam locomotive. I highly recommend this book above any other on this topic.