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Emigrating with his family from England. Patrick grew up in the Jewish neighborhood of Lincoln Park, in Chicago's Near North Side and during Prohibition, eventually becoming an associate and later partner of Greek-American loanshark and extortionist Gus Alex.
Patrick was imprisoned on June 28, 1933, for robbing a bank in Culver, Indiana, as well as his participation in six suspected gangland slayings. Patrick was paroled on March 11, 1940, and he continued working for the Chicago Outfit and, by the 1950s, his Westside restaurant was one of the biggest bookmaking operations in the city. He would also expand into legitimate front businesses, primarily laundry companies, for illegal gambling, loansharking and extortion activities.
On June 28, 1933, Patrick received a 10-year sentence for robbing a bank in Culver, Indiana.
In 1992, Patrick agreed to become a government witness following his indictment for racketeering charges. His testimony would result in the conviction of Gus Alex and several other key figures involved in the city's extortion rackets.
- Abadinsky, Howard. Organized Crime, 5th ed. 1997.
- Kelly, Robert J. Encyclopedia of Organized Crime in the United States. Westport, Connecticut: Greenwood Press, 2000. ISBN 0-313-30653-2
- Sifakis, Carl. The Mafia Encyclopedia. New York: Da Capo Press, 2005. ISBN 0-8160-5694-3
- J.P. Rich (August 9, 2010). "Death for 'Little Lenny'". Gangland Chicago Off the Cuff.
- Matt O'Connor; John O'Brien (September 17, 1992). "Patrick Lifts Curtain On Mob Days". Chicago Tribune.