So I guess the book is all factual? Furthermore, I'm sure it consists of the underworld and their businesses, whether it be gambleing or narcotics, etc?

I could take that part of the Godfather and link it to those businesses in the books?

Any other suggestions? (Maybe partaining to the book, DC? Maybe how the family's functioned, if similar to the Godfather style? It seems you may have read the book, were I have not and would need to go and purchase it.)