PBS
Pbs: American Experience: Public Enemy #1: Gangsters During the Depression
"Gangsters" in the Great Depression were divided into two different groups: Mobsters and Outlaws. This article discusses the differences between the two and the role each group played.
Siteseen
Siteseen: American Historama: Al Capone Facts
A comprehensive overview with many interesting facts and information on Al "Scarface" Capone, the most famous of all the Prohibition Era gangsters.