Musicians Jerry Garcia - electric guitar, vocals Phil Lesh - electric bass Mickey Hart - percussion Bill Kreutzmann - drums Howard Wales - keyboards

Guests unidentified (complete show) - flute

Garcia also appeared with the New Riders of the Purple Sage at this show

Complete Set: I Know It's A Sin [1] , Hi-Heel Sneakers [2] , Dark Star [3][4] > The Eleven [3][4] > Dark Star [3][4] [1] Final known performance (by Mickey and the Hartbeats) next known performance on 1970-06-04 by GD [2] Only known performance (by Mickey and the Hartbeats) last known performance on 1969-08-03 by GD [3] Final known performance (by Mickey and the Hartbeats) next known performance on 1969-08-30 by GD [4] Theme only

• There had been speculation that it was afternoon, but the evidence is not really consistent with that. Instead, it was probably 8/28/69 in the evening. Terry Nails: "As far as the issue of bands jamming during the day at the Playland location goes, it did happen, but not that often and it was never announced to the public. Most of the ones I remember took place after we were done with the Common meetings. I also remember that some bands would occasionally rehearse there as well."
• Corry, on Wales: "Given the distance of the Great Highway from the rest of San Francisco and particularly Marin, I am less likely to think that anyone there just "dropped by," in distinct contrast to, say, Broadway ... Someone invited Howard Wales, and someone invited him when Constanten wasn't present. This leads me to think that Wales had already jammed with Garcia, since it seems like such a trek. I am sure Wales wanted to jam with Garcia, but he was a working musician with a band, so coming out to a jam would take time away from his band, and he would be less likely to do it if he wasn't guaranteed a real chance on stage."