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https://www.youtube.com/watch?v=BZqThttBpU0 - Al Catraz a brief history
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http://lanoire.wikia.com/wiki/Mickey_Cohen
http://louis Sonney at the Internet Movie Database
http://jump up to: a b c d Scott McCabe, "'Smiling Bandit' makes daring escape off island", Crime History, The Washington Examiner, September 5, 2012, p. 6.
http://jump up to: a b Ward, David A.; Kassabaum, Gene G. (2009). "Alcatraz on Trial". Alcatraz: The Gangster Years. University of California Press. pp. 187–188.. Retrieved September 11, 2011.com
http://www.alcatrazhistory.com/mgk.htm.
http:// Finger, Michael. Public Enemy Number One.The real story of Machine Gun Kelly .htm
http:// "Machine Gun Kelly". Alcatraz history. Retrieved 2009-05-06.
http:// O'Dell, Larry. "Urchel Kidnapping". Encyclopedia of Oklahoma History and Culture - Oklahoma Historical Society. Retrieved May 11, 2013.net
http://AlvinKarpis-alcatraz
http//www.history.com
http://www.nps.gov/alca/learn/historyculture/alcatraz-military-timeline.htm
http://www.mercurynews.com/
http://www.abouttravel.com/