First edition of this comprehensive history of the Southern Pacific line, focusing specifically on the steam locomotives in use from 1862-1962. Over the years the SP had over 4000 steam locomotives and this book is intended to provide a pictorial review of those engines as well as a systematic listing of the nearly 300 railroad companies that were consolidated into SP over the years. The book is divided into three sections: Section 1 is a pictorial of the 21 classes of steam locomotives; Section 2 is a corporate history; and Section 3 covers miscellaneous subjects such as electric cars, McKeen cars, gas electric cars, significant dates, and list of merged companies. Profusely illustrated with black & white photographs, all with detailed captions. With Map Supplement consisting of 18 maps of Southern Pacific's Divisions showing each at its greatest extent. 480 pages.