Original 1st printing 8&1/2 x 11" concert flyer for the Yellow Brick Road appearing at the Matrix in San Francisco, CA from 4/7-9/1967. 
 
 Art by Leidenthal, thin flat stock flyer is in excellent (B+) condition; aside from a few stray light pinch bends here and there, a VERY soft diagonal bend/indentation in the upper left margin and a small stain/discoloration (part of the printing process?.. not sure) along the upper right margin, otherwise it is a mostly-clean example of this charming little early-'67 Matrix flyer.

GREAT design on this one!