If you want to know about the Cleveland mafia...
...then get Rick Porrello's books. Two are of special interest here:
"To Kill the Irishman: The War That Crippled the Mafia"
http://www.amazon.com/Kill-Irishman-that-Crippled-Mafia/dp/0966250893/ ref=sr_1_1?ie=UTF8&s=books&qid=1247087605&sr=1-1
and...
"The Rise and Fall of the Cleveland Mafia: Corn Sugar and Blood"
http://www.amazon.com/Rise-Fall-Cleveland-Mafia-Sugar/dp/1569800588/re f=sr_1_3?ie=UTF8&s=books&qid=1247087689&sr=1-3
You can also consult his authoritative website: americanmafia.com
Nomad