Original 1st printing 14&1/8 x 19&7/8" concert poster for the Sparrow (an early version of Steppenwolf) appearing with the Freudian Slips and the Sons of Champlin at the Ark in Sausalito, CA from 12/8-22/1966.
 
 Art by Tracy-Yates Studio, medium-thick flat vellum stock is in decent/used (B/B- to B-) condition; there is a fairly pronounced amount of moisture staining/edge wear along the top margin, along with a trace of edge toning around the other margins and a whisper of handling, otherwise fine- the damage on this one is really limited to the top border/margin,the image area is actually pretty clean.

 Cool-looking semi-early (late-'66) Ark poster.