The Ralph Ellison Branch Library serves 688,000 residents in Oklahoma City. Established in 1975, the library is part of the Metropolitan Library System. The library system maintains 1 million volumes and circulates 6.7 million items per year. The Ralph Ellison Branch Library offers books, e-books, audiobooks, movies, music, a curbside pickup service, after-hours book drop, two meeting rooms, interlibrary loan services, Wi-Fi hotspots, free Wi-Fi, public computers, copying, printing, faxing, and scanning services.