The Last Gangster by Anastasia/Previte also has a good amount - I think that's where I first saw the Lutz story.

At one point, according to court papers, Mr. Stanfa referred to a member of the Merlino group and said: "You know what I'll do. I'll get a knife. I'll cut out his tongue, and we'll send it to the wife."

He was talking to Sergio Battaglia on that transcript; supposedly Battaglia was making 120k in a civilian job and gave it up to run with Philly LCN.

https://www.youtube.com/watch?v=KRtQTYdaXww