I recently acquired an old NFL coffee table book (Pro Football Experience: David Boss). A cool collection of NFL photos from early-mid 1970s (Tarkenton-era Vikings, St Louis Cards @ Busch stadium, etc). Book is broken in to chapters depicting stages of the game.. Pre-game rituals and prayers, in-game action, halftime. Photos viscerally re-create the mood of being at the stadium and/or on the astroturf. Good read for fans of the NFL and sports history. I noticed, how formal fans were circa 1973; families in collar shirts & nice pants. Fast-forward to the 80s & fans in Cleveland were chewing on Milk Bones & the Raiders' Black Hole looked like the Thunderdome. The Pro Football Experience is a visual capsule of a time & place in pro football.