14-1/8x22.5 poster for Nov. 8-13, 1966 concerts that took place at The Matrix in San Francisco, CA featuring Nick Gravenites (misspelled Nick Graventis), author of the Butterfield Blues Band hit "Born In Chicago" and Congress of Wonders. Poster design by Ruth Garbell includes pocketwatch imagery. Poster has some margin aging and corner tip wear. Fine overall but would make for nice display if framed. Rare.