Alcatraz Federal Penitentiary, San Francisco, California
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- Photo Credit: Shaun Versey / Flickr
Brushy Mountain State Penitentiary, Petros, Tennessee

- Photo Credit: maupuia / Flickr (CC)
Eastern State Penitentiary, Philadelphia, Pennsylvania
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- Photo Credit: Rob Zand / Flickr
Louisiana State Penitentiary, Angola, Louisiana

- Photo Credit: Wikimedia Commons
Missouri State Penitentiary, Jefferson City, Missouri
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- Photo Credit: Steve Mays / Flickr
United States Penitentiary, Leavenworth

- Photo Credit: Wikimedia Commons
Wyoming Territorial Prison, Laramie, Wyoming

- Photo Credit: colddayforpontooning / Flickr (CC)