(1)Developed from Bureau of Prisons data contained in Erwin Thompson's The Rock, p. 415. Precise dates noted above are year ending June 30.
(2)For security reasons, Warden Johnston did not want prisoners released directly from Alcatraz. He hoped to ship prisoners off to other prisons so that information reaching the outside about Alcatraz's security and routine would be at least a year old. Other prison wardens, managing overcrowded prisons and work camps elsewhere in the Bureau of Prisons system, did not cooperate during the early years. They sent Alcatraz their overflow, including many prisoners due to be released. As the years passed, Johnston and his successors were able to gain more control over the prisoners sent to Alcatraz and managed to bring the number of prisoners whose sentences expired there to a minimum.
Move on to the next chart: Conditional Releases
Copyright 1997 by Joel GAzis-SAx