A widely circulated poster features The Grateful Dead headlining three nights over “Jorma Kaukonen, Jack Casady and Joey Covington” and the Cleanliness and Godliness Skiffle Band. The first two nights (Friday and Saturday June 27-28, 1969)were scheduled for the Sonoma County Fairgrounds, and the last night (Sunday June 29, 1969) at The Barn in Rio Nido. Rio Nido is a small community near Guerneville, in the remote Northwest corner of Sonoma County. The Rio Nido Barn is often confused with The Barn in Scotts Valley (near Santa Cruz), but I believe it was a tiny place previously known as The Rio Nido Dance Hall.
Jorma and Jack did not yet use the name Hot Tuna for their local gigs, and this gig with Covington was an early, electric iteration ot Tuna. The Cleanliness and Godliness Skiffle Band were a locally popular Berkeley band, who had released one album on Vanguard in 1968. I have written extensively about their history elsewhere. As part of that research, CGSB harmonica player Brian Voorheis recalls these gigs very clearly, for a variety of memorable reasons.
After the Cleanliness and Godliness Skiffle Bands had two memorable nights in Santa Rosa (drummer Tom Ralston stood in for Mickey Hart for a few numbers on June 27, and Jerry Garcia played pedal steel with CGSB on the next night), the CGSB had a long drive back to Berkeley, still buzzing with excitement. Voorheis pointed out (in a personal email) that the Rio Nido gig on Sunday night was probably canceled, since his band would have stayed in Sonoma, or at least recalled a long drive to Rio Nido on Sunday afternoon. After such a memorable pair of gigs, a third night would not have passed unnoticed, so it seems more likely the third gig was canceled.
It is possible that the Dead played Rio Nido without supporting acts—the venue was so tiny that they wouldn’t have needed help to sell it out—but its just as likely that the third night made no financial sense for the promoter. Apparently, according to Deadlists, the announcer mentions the Rio Nido show at the conclusion of the previous night’s show, so its hardly a foregone conclusion, but CGSB’s experience at least raises the possibility the show never occurred.