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1963 USP Marion
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Lockdown penitentiaries
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Inside America’s Toughest Federal Prison - The New York Times
https://www.nytimes.com/2015/03/29/magazine/inside-americas-toughest-federal-prison.html
1787 Pennsylvania Prison Society
1829 Eastern State Penitentiary (ESP)
1963 USP Marion
1971-08 1971-08 Sanford prison experiment
1989 Pelican Bay State Prison
1995 ADX Florence
Aryan Brotherhood (AB)
Solitary confinement
United States Penitentiary, Marion - Wikipedia
https://en.wikipedia.org/wiki/United_States_Penitentiary,_Marion
1963 USP Marion