"PRIMARY SOURCE St. Valentines Day Massacre: The aftermath of the Valentines Day Massacre of..." Crime and Punishment: Essential Primary Sources. Ed. K. Lee Lerner and Brenda Wilmoth Lerner. Detroit: Gale, 2006. Gale Biography In Context. Web. 15 Nov. 2012.
"The S-M-C Cartage Company, the scene of the St. Valentines Day Massacre, in which seven men who..." Roaring Twenties Reference Library. Ed. Kelly King Howes. Vol. 2: Biographies. Detroit: UXL, 2006. U.S. History In Context. Web. 15 Nov. 2012.