There are two further songs by Johnny Cash in my collection, both from his "Murder" album.
These are "Austin Prison" and "Orleans Parish Prison."
Top of any list of songs abut prison, for me, would be the beautiiful English lyric by Richard Lovelace titled "To Althea From Prison." (Stone walls do not a prison make, nor iron bars a cage etc). My favourite version of that lyric is by Fairport Convention. It featured on their highly recommended 1973 album "Nine" and may feature elsewhere. Sublime.