I’m in the market for a really good, factual book about the Mob that is also well written. The prohibition-era is my main interest, but if the book is good, I’ll try anything.
Dillinger, the Hidden Truth by Tony Stewart covers way more than just Dillinger
Gangsters and Outlaws of the 1930’s: Landmarks of the Public Enemy Era
by Richard Owen, James Owen would be great for planning a sightseeing holiday.
The Untouchables by Eliot Ness and Oscar Fraley which I read many years ago was great.