No hardback books, because it is easy to hide contraband in spine of these books.
No ethnic materials or programs because it means they would have to provide for every ethnic group that demands materials.
Mail room has a 20 page list of materials that are not allowed.
They have faith-based programs and want materials that support those programs.
They tear out sections of magazines that have what they consider inappropriate before sending them to the library or to the inmates who have subscriptions.”
Censorship and Prisons: http://olos.ala.org/columns/?p=100