Lossy Audio Bootlegs
Here is an Oak Ridge Boys concert from East Rutherford in 1980. I believe they were opening for someone at the time.
http://www.mediafire.com/download/jwndv35horr4nbo/Oaks_1980_E._Rutherford.zip
Secondly, here is another Oaks concert from 1980 that was done on the "Country Greats in Concert"...