I was looking through TC's webpage at http://www.tomconstanten.com/base.htm and saw a few GD dates (w/TC) not mentioned on deadlists, specifically:
1967 Sept.? Las Vegas, Nevada Convention Center Rotunda 1969 Feb. 3 Minneapolis, Minn. Guthrie Thrater 1969 Dec. 14 Los Angeles, Calif. Kaleidoscope 1970 Jan. 15 Seattle, Washington Aqua Theatre The locations are not unreasonable for those dates. Maybe they were scheduled, but not performed, I have no idea. Bill San Rafael, Ca.