What happened to Judge Northcutt?

“Judge Northcutt really seems heroic.”

I am just starting this great book. Your writing really puts me back in these times. A question perhaps for the group. Judge Northcutt really seems heroic in all he did to combat this. It's stated in page 40 that he died in 1947 at age 54. This was after losing his bid for re-election in 1940. He was working apparently on behalf of a client over gambling losing to a local club. Was his cause of death ever investigated? He seems so young. I hope there are streets, monuments and other ways to recognize his leadership, often seemingly alone, to defeat organized crime, whether local or Mafia.