If you have any of the following, I'm up to a trade!

Grateful Dead
ANY 1983 - 1985 Master or 1st Gen cassette sbd that I do not have.
10/6/84 SBD
7/6/87 SBD
6/20/88 SBD
11/16/91 Master Cassette or better audience or board
10/28/94 SBD
String Cheese Incident
7/4/97 Big Top Tent FM or SBD
12/31/00 DSB