History of Instant Replay
How instant replay has revolutioned sports on TV – The Denver Post
NFL announces major rule changes which will make games last even
The History of Instant Replay in the NFL
Dec. 7, 1963: Video Instant Replay Comes to TV
How Technology Has Changed Football
No momentum for big instant replay rule changes – Football Zebras
Upon further review: Alabama experimenting with instant replay in
NFL rule changes: Modified instant replay, more positions allowed
How the NFL plans to overhaul instant replay in 2020, and who
NFL Lockout: the Debt Ceiling Fight Is Like the NFL Lockout
Has The NFL's Instant Replay Run Its Course?