"Triumph I: Altoona to Pitcairn 1946-1996" by Charles S. Roberts is a book that chronicles the history of the Pennsylvania Railroad from 1946 to 1996. Focusing on the period between Altoona and Pitcairn, this book provides a detailed account of the railroad's operations and changes during this time. Written in 1996 in the United States, it serves as a valuable collectible for transportation enthusiasts and historians interested in the railroad industry. With a focus on the PRR, this book offers a unique insight into the history of this iconic American railroad.