Baltimore & Ohio Pacific Locomotives by Bob Withers. The focus of this book is the 4-6-2 Pacific type wheel arrangement used as a passenger-service locomotive from the World War I to the end of steam, when the Pacific was probably the most popular of all locomotive classes that tended to be devoted strictly to passenger service. The main thrust of this work is in the photos presented, which are intended to represent the Pacifics in all types of work across the B&O system. Also contained is a detailed roster of all the B&O 4-6-2’s and some background about each class. Hardbound. 96 pages.