Super Bowl champ Joe Campbell dead at 68, National Sports
Oakland Raiders - Wikipedia
Joe Campbell found dead at age 68 after going on a hike in Florida, suffering a cardiac incident
NFL Today, Week 1 - The San Diego Union-Tribune
Joe Campbell, Former Raiders Super Bowl Champion, Dead at 68 After Going on Hike
Red Miller, former Broncos coach who led team to Super Bowl XII, dies at 89 – The Denver Post
Joe Campbell found dead at age 68 after going on a hike in Florida, suffering a cardiac incident
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