Gavin talks about the niche network he's built up over the course of his research.

Mentioned: 

- David Critchley: https://www.amazon.com/Origin-Organized-Crime-America-1891-1931/dp/0415882575

- Tom Hunt: https://informer-journal.blogspot.com/

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Gavin Schmitt is the leading historical expert on the mafia in Wisconsin. He has written several books on the subject and regularly speaks across the country.

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