"This illustrated history examines the evolution of the mighty "Pennsy" from a disparate group of early horse-car lines into a twentieth-century transportation giant sprawling across 10,000 route miles in 13 of the nation's most populous states."--Dust jacket. "This hardcover edition of the original soft cover volume consists of all new photography from numerous collections. ... We introduce this hardcover edition of the first book in the Railroad Color History Series. We have updated and corrected the text and inserted all new photography and artwork ... [with] extra coverage of the railroad's vast locomotive fleet, with separate chapters for PRR steam, electric locomotives, and diesels."--Page 6- 7.