Pat Downey is the Author of Gangster books featuring mobsters of the Prohibition era. Author of: On the Spot: Gangland Murders in Prohibition New York City 1930-1933, Hollywood on the Spot: Crimes against the Early Movie Stars, Legs Diamond: Gangster: Gangster City: The History of New York Underworld 1900-1935. Notorious New Yorkers: Two Gun Crowley. Notorious New Yorkers: The Bobbed Haired Bandit. Notorious New Yorkers: Vivian Gordon. Listen in and realize the old time crimnals' aren't much different than modern day ones.
Here are some great episodes to start with.