A large complement of iconography is associated with the Grateful Dead. Along with the "Skull & Roses" and dancing terrapins, perhaps the most ubiquitous are the "Lightning Skull/Steal", and the "Dancing Bears", which notably made their first appearance on the front and rear covers, respectively, of this album. Designed by Bob Thomas, the latter have been incorporated into an endless array of both fan-produced and official merchandise and ephemera. Though usually referred to as the "Dancing Bears" they are, in fact, marching and not dancing. The front cover also has the first appearance of the "Good Old Grateful Dead" epithet, circling the "Lightning Skull" graphic.