Rick Griffin and Victor Moscoso Posters

I recently acquired these two posters, which can also work as one poster, for Jim Kweskin concert in 1967 at the Avalon Ballroom in San Francisco.

The poster is one of the rare collaborations between the two legends of psychedelic graphic design: Rick Griffin and Victor Moscoso. I especially like iconic Moscoso's  hieroglyphic type which is hidden in foliage on the bottom of both sides of the rainbow, its rendered on each side differently. Also I like how Griffin hand drew the half tone pattern in the portrait of Jim Kweskin.