I'm into my 2nd reading of "Public Enemies," a history of Hoover's and the FBI's coming into being from the antitrust gov't organization that it was during the days of Capone in the 20's to the armed, crime fighting org that it had to become in the early 30's during the days of the kidnapping and bank robbing sprees of machine-gun toting guys like Bonnie and Clyde, John Dillinger, Baby Face Nelson, the Barker-Karpis Gang, etc....

It goes into detailed accounts (from opened FBI files) of the tracking and arresting, or killing, of these gangsters, how the depression and the automobile (easy escape across state and county lines) gave rise to these criminals and their crimes.

Internal info on the agency and it's agents, their bunglings, their growth, some of their abuses of power is a part of the history as well. I liked it very much.