Original 1st printing 22&1/2 x 28&1/2" concert poster for the Grateful Dead appearing with the New Riders of the Purple Sage and Ox (featuring Jon Paris) at the New Expo Convention Center in Milwaukee, WI on 3/21/1971.

 Designer unknown/not credited, thick glossy-coated index stock poster is in very good to excellent (B/B+ to B+) condition; there is an approximately 1&1/2 x 8" soft moisture stain/light discoloration along the right center margin, a series of light surface scuffs/thin scratches scattered around the image area, light handling wear, a tiny 1/4" tear in the upper left margin and a trace of edge wear, otherwise fine.

 An overall SUPERB example of this low-run extra-large Grateful Dead concert poster from the spring '71 tour. According to several attendees, the show was VERY oversold, in part due to the number of fake tickets circulating. Check out an OK-sounding audience recording of the show HERE:

https://archive.org/details/gd71-03-21.aud.cotsman.12074.sbeok.shnf