The elements were in motion in Conklin's psychedelic seascape advertising Santana and the Youngbloods, and the artist's staid leafy border stood in sharp contrast to the rough seas. BG173 was Conklin's last poster for Bill Graham. Like many of his relationships with artists, the association ended abruptly when Graham cut off contact following a disagreement over payment.
The poster was only printed once before the concert. It measures 14 1/16" x 21 3/16".