Eric Walker added a number of links to ADX Florence, and added ADX Florence to Separate incarceration, Florence, Colorado and Supermax prisons in the United States

Eric Walker added 1995 ADX Florence and 1829 Eastern State Penitentiary (ESP) to Separate incarceration, and added Separate incarceration to Solitary confinement and Prison reform

Eric Walker added Separate incarceration and a number of links to Solitary confinement, and added Solitary confinement to Detention and imprisonment

Eric Walker added a number of links to Eastern State Penitentiary (ESP), and added Eastern State Penitentiary (ESP) to Separate incarceration and Philadelphia

Eric Walker added 1787 Pennsylvania Prison Society and Separate incarceration and a number of links to Prison reform, and added Prison reform to Detention and imprisonment and Criminal justice reform