Original 1st printing (no ink scuffing in "Warren") 17 x 22&5/8" concert poster for the Grateful Dead appearing with the Doors, U.F.O. and Captain Speed at the Earl Warren Showgrounds in Santa Barbara on 4/29/1967. 

 Art by John Cushing, image is featured in the Art of Rock on page 268 (plate 3.46) and is part of the Jim Salzer Presents series.

 Medium-thin flat/textured ("pebbled") stock poster is in near mint to excellent (A-/B+ to B+) condition; a few light handling creases/pinch dings scattered along the top edge, a tiny nick or two around the outer edges, a trace of surface wear and a hint of toning along the bottom/right margins, otherwise it's just about as crisp/sharp as they come.

 No tapes are known to exist, but you can read all about the Dead's spring 1967 exploits HERE: 

 http://lostlivedead.blogspot.com/2010/01/january-april-1967-grateful-dead.html 

http://earlwarrenshowgroundsetal.blogspot.com/2010/09/earl-warren-showgrounds.html