Jim Otto - All-Time Roster - History
Jim Otto - All-Time Roster - History
Professional gridiron football - Wikipedia
31 Gene Mingo Stock Photos, High-Res Pictures, and Images - Getty Images
Jim Otto Career Highlights, James Edwin Otto is a former professional American football center for the Oakland Raiders of the American Football League (AFL) and National Football
FOOTBALL'S PAIN A REMINDER TO JIM OTTO - The New York Times
NFL history: 100 people who shaped the league, pro football - Sports Illustrated
A Living Raider Legend, Mr. Raider, Jim Otto - Sports Illustrated Las Vegas Raiders News, Analysis and More
Jim Otto: Elder Statesman of the Oakland Raiders, News, Scores, Highlights, Stats, and Rumors
The 150 greatest players in college football's 150-year history - ESPN