Original 1st printing 14 x 20" concert poster for the Paul Butterfield Blues Band (featuring Mike Bloomfield and Elvin Bishop) appearing with Jefferson Airplane at the Fillmore Auditorium in San Francisco, CA on 4/15 and 4/17/1966 and at Harmon Gymnasium on the Campus of U.C. Berkeley on 4/16/1966. 
 
 Art by Wes Wilson, image ("Blues-Rock Bash") is # 3 in the Bill Graham/Fillmore series.
 
 Medium-thick flat vellum stock poster has been professionally restored to excellent/near mint (B+ to B+/A-) condition; tack/pin holes in all four corners and in the top center margin have been filled, the piece appears to have been pressed/flattened and there remain a few stray pinch dings hiding within the image area, but overall the piece looks absolutely SUPERB.
 

 GORGEOUS professionally-restored original 1st printing example of this VERY early 1966 Bill Graham poster.