Eric Walker added Inside America’s Toughest Federal Prison - The New York Times to a number of topics
Eric Walker added ADX Florence - Wikipedia to 1995 ADX Florence
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 1963 USP Marion and Entombed: Isolation in the US Federal Prison System and Supermax prison - Wikipedia to Supermax prisons in the United States, and added Supermax prisons in the United States to Detention and imprisonment in the United States and Supermax prison
Eric Walker added 1995 ADX Florence to Florence, Colorado, and added Florence, Colorado to Cities in Colorado
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