The below is from deadlists.com:
According to Barry Welch, who attended the concert, it was announced before the show that TWA had failed to deliver the band’s equipment and they were going to borrow the Allman Brothers Band gear, and first the Allmans would play a set, and then the Dead would play a set, and then they’d jam together. According to Chris Cole who attended this show it was an afternoon show and among the tunes played were Hard To Handle and The Other One. The Dead jammed with the Allmans during the Allmans’ set as well. DeadBase IX lists a Mama Tried and a Will The Circle Be Unbroken, the latter with the Allman Brothers Band.
