Nilanjana Roy’s review of Gregory Roberts’ Shantaram centers largely on comparisons with Henri Charriere’s Papillon, and seems to imply that the classic prison novel is a pulpy tale of the author’s adventures. But prison has also produced some classics, and Roy cites Pilgrim’s Progress. There are others. Don Quixote, Fanny Hill, and several of O. Henry’s stories come to mind. Email me if you think of others.