What are some impactful books written by prisoners that have made a significant contribution to literature and society?

Some impactful books written by prisoners that have made a significant contribution to literature and society include "Letters from Birmingham Jail" by Martin Luther King Jr., "In the Belly of the Beast" by Jack Henry Abbott, and "Man's Search for Meaning" by Viktor Frankl. These works offer unique perspectives on social issues, personal struggles, and the human experience.