If you’re old, there are books about/by OJ (one of my favorites is “Education of a Rich Rookie” with stories of old time Bills players and OJ’s Most Memorable Games by Jim Baker), Chuck Knox, Smerlas, Eddie Abramowski, Tasker, Cookie, Dobler, “Talking Proud” (about the 1980 season), “More Than A Ring” about Don Beebe. I have all these and enjoyed them all.
Ron McDole has a new one out that I have on my list to read.
If you are a fan of 1960s Green Bay Packers, “Instant Replay” by Jerry Kramer is a great, great classic.
There are also some really interesting books on the old AFL (“Going Long”, “Remember the AFL”, “If You Can’t Join ‘Em, Beat ‘Em”, “The Other League”).
I also have a couple on Joe Willie Namath who was quite a character and interesting to read about.