Jerry Garcia
- electric guitar (lead), vocals
Bob Weir
- electric guitar (rhythm), vocals
Phil Lesh
- electric bass, vocals
Ron McKernan
- organ, vocals
Bill Kreutzmann
- drums, perc
Rationals, Southbound Freeway, Bishops, and Ashmollyan Quintet
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Notes
According to DeadEssays The poster is very hard to interpret and is contradicted by two different ads. One ad lists the Rationals and the Gang, the other ad only lists the Southbound Freeway. The Rationals are confirmed on the 12th by a newspaper report.