For librarians following the prison strike of 2018 (and for those who are not yet doing this), R.J. Rubin’s U.S. prison library services and their theoretical bases is essential reading for background perspective on how librarians have historically thought through library services in jails and prisons. Published in 1973, it is a signpost into how library services came to exist in jail in prisons, librarians’ belief in their own theoretical and professional expertise, and how short a time there have been librarian-led services in jails and prisons in the United States. You can access the full text at