Slightly off-topic...
There are plenty of video reference sources like NFL Films, the internet, classic NFL Network & ESPN replays, etc., along with retired players and coaches retrospectives, from previous decades. A lot.
FYI, young fans. The NFL didn't start playing games in the 1990's. If your entire personal perspective about a particular player or team is only what you've seen live on television since the Jimmy Johnson years, you don't have enough to go on.
For example, to say that Charles Haley was a better pass rusher than Harvey Martin, simply because you only saw Haley play, doesn't place you in a very favorable debating position. You only see half the picture. You don't have all the data. All the pistons aren't firing at the same time.
Excuse the rant, but a lot of great players are constantly dissed by younger fans simply because they just don't know who they were or what impact they had on the game.
/rant