Looking for data...70's game

[JONCHUCKERY]

Curious as to if anyone out there has or knows of data on the following...

1. Least used ballparks in 70's game
2. Ballpark with fewest championships 70's game

Yountfan's data has 2 parks...County and Arlington...that have by far the least amount of recorded ABs of players. I would assume, if info is current or close to, that probably answers quest #1 and is a logical choice to answer #2...If anybody has any sort of info I'd be thrilled...Basically I want to make my next goal to win a ring in the least used and/or fewest championship park