Original  7 x 4&5/8 concert postcard for Crosby Stills & Nash, John Sebastian and Blues Image at the Fillmore West in San Francisco, CA on 10/2-4/1969. The postcard has a schedule backing.
 
Art by Greg Irons, image is #194 in the Bill Graham/Fillmore series. 
 
Postcard is in Near Mint/excellent. Just a tiny speck near the bottom.