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From Wikipedia, the free encyclopedia. In its 29 years of operation, there were 14 acknowledged attempts to escape from Alcatraz prison involving 34 inmates (two, Joseph Cretzer and Sam Shockley, tried twice). Officially, every escape attempt failed, and most participants were either killed or quickly re-captured.
Stroud was imprisoned at Alcatraz from 1942 until 1959. It was determined that Stroud was abusing his research privileges and sent to Alcatraz. Stroud was widely disliked by many fellow inmates and correctional officers. See other links for more detailed information.