It is a cool, and a unique record - there were some solo tracks on other Roach LPs, but not another whole solo drumming album, IIRC. I saw him do two of these live around that time - he really was into it.
Baystate also did a live album of Max' percussion ensemble M'Boom, recorded live at a Netherlands festival - a CD reissue would give opportunity to release the complete performance. The tro issued tracks are a beauty!
That Baystate label released some good stuff - I have an LP of a Charles Tolliver Quartet with Nathan Page that is nice. Marion Brown did LPs on that label, too .....
Someone mentioned an East World LP from Japan - that was another label that issued some gems.
Same goes for Denon - some was on CD, but the majority still awaits a reissue, if only outside of Japan. I have a Reggie Workman solo bass LP on Denon (he also worked as a A & R man for that label) that is stunning!