The product is a vintage 1973 Association of American Railroads Automatic Car Identification Manual, manufactured in the United States. This manual likely contains important information about how to identify and track train cars during that time period. Application, Quality Maintenance and Repair and Approved Vendors.With a focus on transportation and railroadiana, this item would be a valuable collectible for enthusiasts or collectors interested in the history of American railroads. 86 pages full of information and diagrams