Original 1st printing 14&1/4 x 22" concert poster for the 13th Floor Elevators (featuring Roky Erickson) appearing with the Conqueroo at the City Coliseum in Austin, TX on 2/10/1967. 

 Art by Mark Weakley (inspired by Wes Wilson's BG 41 design), medium-thick flat index stock poster is in near mint to excellent (A-/B+ to B+) condition; just a light amount of toning/age spotting and a couple of tiny surface chips in the upper left corner, a tiny 1&1/2" pressure crease in the right center margin, a few stray soft handling dings and a series of ULTRA-thin press indentations along the left margin, otherwise fine.

 An absolutely GORGEOUS specimen of this VERY early psychedelic concert poster from Austin.

 This was the third concert produced by the Austin hippie collective "the Electric Grandmother", an early precursor to the Vulcan Gas Company.