Original 1st printing 20 x 14&1/8" concert poster for Quicksilver Messenger Service and Country Joe & the Fish appearing together at the Avalon Ballroom in San Francisco, CA from 5/19-21/1967.

 

 Art by Rick Griffin, image ("Sutter's Mill") is # 62 in the Family Dog/Avalon series.

 

 Medium flat index stock poster is in excellent (B+) condition; there are a series of VERY soft (almost invisible) vertical roll creases traversing the bottom margin, along with a thin diagonal/vertical crease in the upper left corner/margin, a few tiny edge dings scattered around the outer margin area and a touch of corner-tip toning, but overall it's in very nice shape.

 

 Great-looking 1st printing mid-'67 Rick Griffin Avalon poster.