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.
Other
Jazz Age Culture: Part 1
Features numerous links to external sites that provide information pertaining to the flapper era, jazz and the Harlem Renaissance, prohibition, racial violence, and crime.
Other
Roaring 20s Gangster Links
Provides a list of links regarding the 1920s most famous gangsters, bootleggers, rumrunners, drug peddlers, and labor racketeers.
Other
Mystery Net: st.valentine's Day Massacre
The story behind the St. Valentine's Day Massacre. While gangland warfare was commonplace in Chicago during Prohibition, this attack was unusual because all of the victims were known mobsters.
Siteseen
Siteseen: American Historama: St. Valentine's Day Massacre
A comprehensive overview and a list of interesting facts pertaining to the St. Valentine's Day Massacre which made Al Capone and his Chicago Mafia national celebrities.