Corry: "A correspondent has sent me a (copyrighted) photo of Jerry Garcia playing with the Elvin Bishop Group from this show. Jerry, playing his Tiger guitar, can be seen next to Bishop guitarist Johnny Vernazza, so all of this really happened." It is not the song "Goin' Fishin'" - it is the encore, "Right Now Is The Hour".
ref: Golden Road #11 (Summer 1986), p. 33: "Elvin Bishop opens for the Dead, and Garcia plugs in for one blues number with Elvin's band"
many great pictures and recollections from the dead.net entry for this show.
Attendee peetstr50 recollections of the openers... "The lineup that day at the UCSB football stadium was to be first a local reggae rock band I believe they were called Waa Koo and they were quite good, followed by Warren Zevon, then the Elvin Bishop Group and then the Grateful Dead. But after the local band played there was a little bit of a wait followed by Elvin Bishop, NOT Warren Zevon. (?) Then after Elvin Bishop put on a down-home kickass performance Elvin says "Stick around, were gonna have a little jam session with Jerry Garcia and the local boys." Members of Waa Koo, the Elvin Bishop Group and Jerry Garcia played for about 30-40 minutes. Lots of fun! But then there was a kinda long wait. And Warren Zevon's band took the stage. Then Warren came out and he was VERY very drunk. And he proceeded to be abusive and disrespectful to the audience. And now you know why Warren Zevon was booed off the stage at the UCSB football stadium back in June 1978, sorry to say."