Kurt Huget's archives confirm JGMS at the Share on December 27-28, with takes of $747 and $1,004 respectively.
listings: [contra: Dr. Hook] Hayward Daily Review, December 22, 1972, p. 43; "Jazz, Rock This Week," San Francisco Chronicle, December 27, 1972, p. 44; San Francisco Examiner, December 27, 1972, p. 27. We had also noted a contrary Berkeley Barb listing somewhere, but can no longer find it.