Timothy D. "Big Tim" Murphy was a Chicago mobster and labor racketeer who controlled several major railroad, laundry and dye workers' unions during the 1910s and early 1920s.

Cornelius P. Shea was an American labor leader and organized crime figure. He was the founding president of the International Brotherhood of Teamsters, holding the position from 1903 until 1907. He became involved with the Chicago Outfit, and although he was indicted many times, he usually escaped conviction. After a short prison term for attempted murder removed him from union affairs, Shea was appointed secretary-treasurer of the Mafia-dominated Theatrical Janitors' Union in Chicago.