Original 1st printing 8&1/2 x 11" concert flyer for the Youngbloods appearing at the Matrix in San Francisco, CA from 6/20-25/1967. 
 
 Art by "MG", thin flat pulpy/fibrous stock flyer is in near mint to excellent (A-/B+ to B+) condition; really nothing more than a few ULTRA-light handling creases scattered around the outer margin area and a soft corner-tip bend or two, otherwise it is a SPECTACULAR (very close to mint) example of this semi-obscure mid-'67 Youngbloods flyer from the Matrix.