Original first printing 13 x 19 & 1/2" concert poster for Crosby Stills & Nash, The Blasters, Tania Maria, Los Lobos, John Lee Hooker, and Matinee Forever at the Sierra Sun Music Festival at the Nevada County Fairgrounds Grass Valley on 9/9/1984.
 
Artist Unknown.  
 
The poster is on glossy paper.  Excellent/nm condition.