Steam In The Alleghenies: Western Maryland is written by Ross Grenard and John Krause, originally published by Carstens Publications in 1981. I do not believe the book is in print any longer and I was lucky enough to receive my copy from a late friend. Today, and overall, there are not many books covering the operations of the WM (affectionately known as the "Wild Mary") aside from this title and a few others such as The Western Maryland Railway: Fireballs and Black Diamonds and The Western Maryland Railway: Cumberland to Hagerstown & The New Line (just released in 2010), which is unfortunately given the line's size and territory it covered. In Mr. Grenard's and Krause's book they feature the fabulous photography of Bob Collins and Bill Price just after World War II and just prior to the WM's transition to diesels.
Considering that many of the photos in the book were taken in remote locations and the most of the WM has long since been abandoned if you can find a copy of Steam In The Alleghenies: Western Maryland I would not hesitate to purchase it! One thing that you realize while perusing the photos, which is perhaps either indirectly or not intentioned by the authors, is the immaculate condition of the WM's property all across its system. The company was legendary for this trait, which was also during an era that many lines took pride in the appearance of their property, a far cry from many lines today (at least Class Is). In any event, as someone who grew up just a few hours from the Western Maryland's main line but was not around to witness the line during its heyday years this book is a fascinating glimpse at such.
During the introduction of Steam In The Alleghenies: Western Maryland you learn the time period the book covers (between World War II and the mid-1950s) and learn a bit about the company and what it stood for. For instance, by the 1930s as the book points out the WM, despite its small size, was well known by that time for its ability to move freight, both merchandise and aggregates (like coal) quickly to their intended destination. While the railroad did have still grades in western Maryland and West Virginia's Eastern Panhandle in general because it was engineered at such a late date offered a route that overall was less circuitous than its nearby competitors.