Original 1st printing 8&1/2 x 11" concert flyer for the Youngbloods appearing with the Sons of Champlin and Sparrow at the Avalon Ballroom in San Francisco, CA from 12/16-17/1966.
 
 Art by Stanley Mouse and Alton Kelley, image is # 39 in the Family Dog/Avalon series.
 
 Thin flat stock flyer is in excellent (B+) condition; there are pin holes in three of the four corners, a tiny bend in the upper left corner tip and a trace of handling wear, but that's pretty much all there is to speak of.

 SUPERB-looking example of this late-'66 Mouse/Kelley Avalon Ballroom flyer.