28 CFR § 544.100
Purpose and scope
July 24, 2020
The Bureau of Prisons provides inmates within each of its institutions with library services necessary for educational, cultural, and leisure activity. The Warden shall ensure that the inmate library has a wide variety of reading materials. Library services shall ordinarily be available to all inmates daily, including evenings and weekends, except in detention facilities where service shall be scheduled as frequently as possible to ensure reasonable access.
[46 FR 24900, May 1, 1981]