Matrix Tuesday Night Jam Sessions

Matrix
San Francisco
8-4-70
SB > R > DAT > CD

Jorma, Jack, Carlos Santana, John Cipollina, 
Dino Valenti, Gary Duncan & Nicky Hopkins


Matrix
San Francisco
10-21-70
SB > R > DAT > CD

Jorma, Jack, John Cipollina, Jerry Garcia,
David Frieberg, Papa John Creech & Nicky Hopkins

More info here...

http://www.mjckeh.demon.co.uk/jc/misc-det.htm#mt70