A tool for the planning, implementation, and evaluation of library services to prisoners in places of incarceration, from the International Federation of Library Associations, available in multiple languages.
Numerical standards from the 1992 Standards for Adult Correctional Institutions, which is out of print. This is still a good guide for access, staffing, seating and collection for adult correctional institution libraries.
Expanding Information Access for Incarcerated People is an initiative based in San Francisco Public Library’s (SFPL) Jail and Reentry Services program, in coordination with the American Library Association (ALA). It includes New Standards for Library Services for the Incarcerated or Detained.