In 1982 I saw Tapezoid in Meadville, PA USA at Allegheny College and they had several LPs on sale. I bought one as did a friend of mine. I'm sure at least 'their' stuff is available someplace. Maybe Rounder? They picked up alot of stuff from the late 70s early 80s. Philo, Flying Fish, etc. were all absorbed by Rounder. I'd start there.