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 GORGEOUS near mint (A-) condition; just the slightest whisper of handling/toning, otherwise it's an absolutely fantastic-looking clean example of this classic 1967 Griffin FD image.