Original 7&1/2 x 9&3/4" concert double postcard for the Grateful Dead, Santana, Steppenwolf, Sons of Champlain, the Staples Singers, Chuck Berry, and Steve Miller,  at the Fillmore Auditorium in San Francisco, CA on 8/27-9/1 and 9/5-7/1968.
 
Art by Lee Conklin. image is #134 and 135 in the Bill Graham/Fillmore series. 
 
Postcard is in great condition.  The front and back are very clean. There is a tiny bit of handling. The postcard was addresed and mailed.