NLS selects the same types of books that are available though public libraries. Titles are considered for production in braille or recorded format when favorably reviewed in reputable nationally distributed publications or included in authoritative bibliographies. NLS strives to provide classics and informational readings, along with popular recreational works that appeal to children, young adults, and older readers. Science fiction, mysteries, romances, and westerns are represented, as well as bestsellers, standard religious works, and some foreign-language materials. Books of local or regional interest are generally produced by network libraries.