There is also the book on joe Colombo and the book about john alite due out
I wouldn't mind reading the book with Alite. There will be murders and a different look at the Gotti family that most people haven't heard or seen. Should be interesting.
"Surviving the Mob: A Street Soldier's Life in the Gambino Crime Family" by Andrew DiDonato (an associate) is a pretty good look at the Gambinos other than the Gottis. This guy was an associate of the Corozzo crew.
Not a great book, but a lot of parts are really good, like how he gets started shaking down drug dealers and how Nicky Corozzo puts him in charge of a gambling store.