The National Automobile Dealers Association offers vehicle market value listings for new and used travel trailers and fifth wheels online. NADA does not offer market value listings for cargo trailers or boat trailers.
The term "blue book" originally referred to the Kelly Blue Book; however, it has been expanded into a general reference for vehicle market value publications, according to AutoBlog. Kelly Blue Book, the NADA vehicle market value list and the Black Book are three well-known blue books used by both consumers and businesses. Each blue book lists different market value prices for vehicles, depending on the target audience and the method of evaluation.