We wonder if this was a late add? The MIJ of a few days before only lists the Tuesday gig. The pink section ad and other listing both give Delta Wires at Keystone this night. listing: [contra] San Francisco Sunday Examiner and Chronicle Datebook, November 16, 1975, p. 7; ad: [contra] San Francisco Sunday Examiner and Chronicle Datebook, November 16, 1975, p. 39