Original 1st printing 21&1/2 x 33&1/2" concert poster for the Grateful Dead appearing with New Riders of the Purple Sage at the East Town Theater in Detroit, MI from 10/23-24/1971.

 Art by Stanley Mouse and Alton Kelley, medium glossy stock poster is in very good to excellent (B/B+ to B+) condition; there are staple/pin holes in all four corners, along with a light amount of handling wear, a semi-soft diagonal bend in the lower left corner and a few tiny pin-prick surface spots scattered around the image area, otherwise it is a really nice-looking example of the '71 Fall Tour poster.

 Stream the 10/23 show (taken from the original WABX-FM broadcast) HERE:

https://archive.org/details/gd1971-10-23.sbd.miller.111673.flac16