Report: Derek Boogaard's parents sue NHLPA
Family of Derek Boogaard files wrongful-death lawsuit against NHL
Heartbroken mum pens letter to hockey star - eight years after his
Derek Boogaard: Wrongful death lawsuit from ex-NHLer's parents
Derek Boogaard: Wrongful death lawsuit from ex-NHLer's parents
Judge dismisses suit blaming NHL for Boogaard's death
05152011-SLS-A01 by Salisbury Post - Issuu
Times Leader 12-17-2011 by The Wilkes-Barre Publishing Company - Issuu
Archives – Concussion Inc. – Author Irvin Muchnick