Original 2nd printing 14&1/2 x 20" concert poster for Big Brother,& The Holding Company Jim Kweskin Jug Band, and Electric Train, at the Avalon Ballroom in San Francisco, Ca, on 10/7-8/1966.  The poster has 29(2) on the edge and The Bindweed Press credit.
 
 
Art by Stanley Mouse.  Image is #29 in the FD Family Dog series.  
 
The poster is in great vintage condition.  There are tackholes on all four corners and one side; two small tears on one of the edges; and some light edgewear; Otherwise very nice. See photo.  This poster was definitely put up on someone's wall.