Oh I dont know about more official sources there, JLTS, I know the other source for the next box he's working on was a collector in Germany, and he never even recorded the tapes he had, they were commonly circulated tapes from 83 Japan & Australia, along with some midwestern shows. Easy Action never even heard my tapes, but rest assured, they are in the top 10-15% in terms of sound quality, better than most of what I've ever traded for.
As for the Sales on bass, could have also been Alvin Gibbs or Mike Page, but at least he played on Kill City, so makes him more of a Stooge in my eyes.