You're welcome. Oh, and I've found another one: "1971 Minnesota Vikings #2" is "Kentucky Gentleman" by Dennis Farnon, off of Conroy BM 484.
Can't help you on the third '71 Vikings track, but it's definitely of the stock variety, as it can be also heard here:
https://www.youtube.com/watch?v=kskDtjZ67ycIf I had to guess as to where it came from, I'd say it's either also Conroy, or from a rare Emil Ascher library LP that hasn't surfaced yet.
Oh, and other Cinemusic albums that might have some mystery NFL cues might be the following:
CMR 216 (there's some short jazzy tracks on that one)
CMR 219 (specifically side B, which consists of all jazz tunes)
CMR 305 ("Over the Rooftops" and "Manhattan Chase" on the B-side of this LP might be something)
CMR 319 (again, side B is devoted to jazz tunes)
CMR 420
I don't own copies of any of them, but hopefully someone here does.