A "book mobile" serving children in Blount County, Tennessee, United States, in 1943
- A mobile library or bookmobile is a vehicle designed for use as a library. They have been known by many names throughout history, including traveling library, library wagon, book wagon, book truck, library-on-wheels, and book
auto service. Bookmobiles expand the reach of traditional libraries by transporting books to potential readers, providing library services to people in otherwise underserved locations (such as remote areas) and/or circumstances (such as residents
of retirement homes). Bookmobile services and materials (such as Internet access, large print books, and audiobooks), may be customized for the locations and populations served. Bookmobiles have been based on various means of conveyance, including
bicycles, carts, motor vehicles, trains, watercraft, and wagons, as well as camels, donkeys, elephants, horses, and mules.