Dang! Listening again and the tapes sound phenomenal.
I first was aware of Mars in 1977/78 when he was studying, via an NEA grant, with Roscoe. In fact I had to leave Roscoe's house one day so they could work.
For the interested, I was staying with Roscoe (in Wisconsin) planning the recordings that became LRG-The Maze-SII Examples.
Hal seemed (to me) to consider Mars his "greatest student".
I am currently going through all of my Hal Russell material and am still intrigued by all the bright, young musicians he gathered.
Hal's work planted the seeds for all the current Chicago north side activity. Too bad he isn't around to appreciate or piss on the results.
I really miss him.