Mobfather by George Anastasia, about Tommy Del's wife and kids. Even after reading plenty about the Scarfo era, this one still provided some interesting information I hadn't heard before. It was also good to hear from the perspective of a wiseguy's family. Plus it takes a stance against the deals the government cuts with these guys.

Also have been reading Joe Valachi's The Real Thing. So many interesting little bits of information.
http://mafiahistory.us/a023/therealthing.htm