On This Date in Raiders History: Jim Otto inducted into the Hall of Fame
Jim Otto - University of Miami Sports Hall of Fame - UM Sports Hall of Fame
Jim Otto, American Football Wiki
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Las Vegas Raiders - Wikipedia
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Raiders' Jim and Gus Otto share a last name and a football heritage, Raiders News
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
NFL History: 100 objects that tell the story of football - Sports Illustrated
Jim Otto: The Ultimate Raider
Las Vegas Raiders - Wikipedia
AFL Anthology - January 5, 1938 – Jim Otto Born Happy