Little is known of Maurice Enright's background before his gang's violent and brutal methods managed to dominate Chicago's labor unions by the end of the 19th century. A veteran of the "Circulation Wars," he became a major figure in the city's steamfitters' union during the early 1910s and was instrumental in the rise of Johnny Torrio, who provided Enright with invaluable political protection from Chicago's First Ward vice district Aldermen "Bathhouse" John Couglin and Michael "Hinky Dink" Kenna.
Enright remained in control of the city's labor unions into the early months of Prohibition until his death on February 2, 1920, when he was gunned down near his South Side home (most likely by rival Timothy "Big Tim" Murphy or Johnny Torrio and Al Capone. Enright's death occurred shortly before the death of James "Big Jim" Colosimo).
- Johnson, Curt and R. Craig Sautter. The Wicked City: Chicago from Kenna to Capone. New York: Da Capo Press, 1998. ISBN 0-306-80821-8
- Tim Novak, Robert C. Herguth and Steve Warmbir. "One family's rise, a century of power." Chicago Sun-Times. 22 May 1906. (Discusses the opinion of the Chicago Police Department regarding the alleged involvement of reputed Outfit (organized crime) boss Bruno Roti, Sr. in the murder of Maurice "Moss" Enright).