Original 4&5/8 x 7" concert postcard for Canned Heat, Gordon Lightfoot, and Cold Blood at the Fillmore Auditorium in San Francisco, CA on 10/3-5/1968. The postcard has a schedule backing.  It is a "Type B" postcard.
 
Art by Lee Conklin, image is #139 in the Bill Graham/Fillmore series. 
 
Postcard is in good condition ; There are two tackholes on top and a bit of edge wear.  Otherwise nice.