Original 1st printing 22&1/8 x 28" tour-blank format concert poster for the Grateful Dead appearing poster for a proposed Warner Brothers-sponsored series of (canceled) free concerts to be held over the summer of 1970, featuring the Grateful Dead, along with Crazy Horse (without Neil Young) and Sal Valentino.
 
 Art by Greg Irons, medium-thick glossy-coated index stock poster is in good (B) condition; all four corner tips have a bit of wear/creasing with a couple of tiny "dog-ear" splits and a trace of softening, along with a soft matte burn around the outer edges and a slight fade to the red/yellow/green ink, plus a few tiny edge creases, a couple tiny handling creases/surface scratches hiding within the image area and a few light pin-prick age spots here and there, otherwise fine.
 
 Since the tour was canceled/re-organized (it actually sort-of morphed into the 1970 "Medicine Ball Caravan" tour, with several different participants), most of the posters were remaindered and never made it out of the print shop (Tea Lautrec). A VERY uncommon and AWESOME-looking Grateful Dead poster.