Andrew R. Calderón, David Eads; last updated: Feb. 27, 2023 For over a year, The Marshall Project requested banned book lists from every state in the United States. We received lists from 24 states, and published lists from 18 of them as a searchable table along with an essay from Keri Blakinger about her experience with prison censorship while she was incarcerated and now that she published her memoir, Corrections in Ink. We have since updated the database with information about state-level book ban polici