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 good to very good (B to B/B+) condition; there are tiny light surface pulls (from tape removal) in four corners, a tiny nip out of the top right corner tip, a tiny pin hole/drag tear in the upper right corner of the image area, a light amount of handling wear, a couple of tiny edge nicks/staple hole dings, a touch of toning and a soft bend or two lurking around the outer margin area, otherwise fine.

 An overall very nice-looking example of this late-'66 Mouse/Kelley Avalon Ballroom flyer.