"Keystone Korner - next to the Keystone Kops, which shouldn't ruin your night if you don't think about it." Replaced by Grootna as from 1/27/72 listing in HDR. This could indicate that KK was Jerry's plan B, and/or that there was some uncertainty around the Wales gigs. Hell, there's still uncertainty around some of the Wales gigs!
listings: Night Times, January 26 - February 8, 1972, p. 5; Hayward Daily Review, January 27, 1972, p. 16