First Hall of Fame NFL official Art McNally dies at 97
NFL rule changes: Modified instant replay, more positions allowed to wear single-digit jerseys - The Washington Post
NFL100: 30 years ago instant replay helped decide the outcome of a game … and it wasn't pretty – Football Zebras
Best NFL nicknames: 101 greatest monikers in football history
Instant Replay Game - Wikipedia
The History of Instant Replay in the NFL, News, Scores, Highlights, Stats, and Rumors
NFL100: 30 years ago instant replay helped decide the outcome of a game … and it wasn't pretty – Football Zebras
March 11, 1986- NFL adopts instant replay rule - The Declaration
Raiders-Packers takeaways: Amik Robertson, Las Vegas defense saves game, Raiders News
Instant replay hi-res stock photography and images - Alamy
NFF Adds Eight Outstanding Leaders to Board of Directors - National Football Foundation
Harris to hook 31 NFL stadiums up with HD instant replay
NFL100: 30 years ago instant replay helped decide the outcome of a game … and it wasn't pretty – Football Zebras
History of Instant Replay
The History of Instant Replay in the NFL – Benefit or Detriment??