Schoenberg, Robert (1992). Mr. Capone. Nueva York: Morrow. pp. 35-36. ISBN978-0-688-08941-2. Consultado el 24 de junio de 2014.
news.google.com
«John Torrio Pleads Guilty». Associated Press. 12 de abril de 1939. Consultado el 6 de agosto de 2012. «Johnny (the Immune) Torrio, deciding he wasn't immune to relentless government prosecution, pleaded guilty yesterday in federal court ...»
«Torrio Dies. Gave Capone Racket Start». Associated Press. 8 de mayo de 1957. Archivado desde el original el 9 de octubre de 2015. Consultado el 6 de agosto de 2012. «Johnny Torrio, first of the bigtime bootleggers, died after a heart attack in a Brooklyn barber's chair April 16. So obscure had he become that his death went ...»
«Torrio Dies. Gave Capone Racket Start». Associated Press. 8 de mayo de 1957. Archivado desde el original el 9 de octubre de 2015. Consultado el 6 de agosto de 2012. «Johnny Torrio, first of the bigtime bootleggers, died after a heart attack in a Brooklyn barber's chair April 16. So obscure had he become that his death went ...»