This book is a pictorial anthology of the largest class of 2-6-0 Moguls locomotives on the Southern Pacific. For over half a century, M-4 Moguls were widely used across the entire Southern Pacific System. This book has 164 pages and includes 295 photos of these small utilitarian locomotives, supplemented by historical by information and technical specifications.

Authors Scott Inman and Jack Herris, Softcover 164 pages.