This book meticulously documents the production of North American locomotives between 1968 and 1989. It serves as an invaluable reference, detailing which companies manufactured which locomotives, the specific years of production, and the entities that purchased them. The work is organized by both the purchasers, including common carrier, transit and commuter railroads, industries, and non-common carriers, and by the builders themselves, such as Alco, Bombardier, Budd, EMD, GE, GM of Canada, and the Montreal Locomotive Works.

This specialized reference work is likely to be highly valued by railway historians, modelers, and industry professionals for its detailed and organized data. The comprehensive lists by both builder and purchaser, coupled with a railroad name index, suggest a thorough and accessible approach to a niche subject. Its publication date indicates it captures a significant period of transition in locomotive manufacturing. The scope suggests it is a definitive resource for its specific timeframe.