I first heard Greg Segal as part of the southern California improvising group, PaperBag. They released an LP and tapes of total improv. They even did a tape of special live radio improvisations. Later, Greg moved to Portland and began his Phantom Airship label where he continues to release some of the finest one man band material of improv, rock riffing, quiet interludes, noise. His talents are remarkable.
My first awareness of the underground tape trading community was when Kenny Ryman brought in some copies of Option magazine to a Paper Bag rehearsal. The band as a whole then did trades with various people, including you (Don Campau), Doug Walker, Little Fyodor, das, David Prescott, Choda, and quite a few others. I found the whole thing very reassuring.