The product is a rule book from 1972 related to Chessie System's B&O, C&O, and WM train handling rules. It is a valuable collectible item for transportation and railroad enthusiasts, providing insight into the operations of these iconic United States railroads from that era. This book serves as a historical reference for those interested in the intricacies of railway management and the evolution of train handling procedures. Please pictures for details. sold as is from a smoke free home.