Original 1st Printing, 14x20" concert poster for the The Charlatans and Canned Heat, at the Avalon Ballroom in San Francisco, CA on 4/7-8/1967. 
 
Art by Rick Griffin, image is #56 in the Family Dog, Avalon series. 
 
The poster is in used vintage condition.  The poster is quite toned.  The poster has tackholes and staple pulls on all four corners, There is a tear in the top left corner. There is a bend in the bottom right corner.  There is some edgewear.  There are small stains under the words lights and books.  This poster was definitely hung up and displayed.