Original 1st printing 14 & 1/8x22" concert pioster for Traffic, Blue Cheer, Iron Butterfly and the Joshua Light Show,  at The Fillmore East in New York, NY on 4/26/1968. 
 
Art by David Byrd.  The image is #5 in the Fillmore East series. 
 
The poster is in good vintage condition.  There are staple pulls on all four corners.  There is a corner bend on the bottom left corner and corner wear on the bottom right corner.  There are small stains throughout the poster, but they aren't obvious.  There are two small edge tears on the bottom.  Also somelight edgewear.  This poster was definitely put up and displayed.