Hockey Enforcer Bob Probert Paid a Price, With Brain Trauma - The

The brutal toll of ice hockey (NHL) skating on thin ice - Martin Samuel

Bob Probert: Late NHL star among athletes hit by brain disease - CBS News

Sportsnet mag: Fall of the Boogeyman

Former NHLer Derek Boogaard had brain disease, researchers say

Bob Probert: The NHL's Undisputed Heavyweight Champ and its Ultimate Tragic Hero - The Hockey News Detroit Red Wings News, Analysis and More

Should enforcers still be a part of the NHL? - Quora

Should enforcers still be a part of the NHL? - Quora

MY HOCKEY CARD OBSESSION: Bob Probert

Former N.H.L. Enforcer Says Fights Aren't Real Problem - The New York Times

Bloody hockey cards celebrate NHL enforcers