the first-ever dramatic account of the founding families of the Mafia
You young'uns are forgetting "The Gangster Chronicles."
It was a mini-series, made for tv back in the early '80s. Not very factual, and not even all that well acted, but it's a lot of fun to watch. If you can find a copy on ebay (and it's not easy), I recommend it just as a fun popcorn movie.
