Original 1st printing 16&1/4 x 22&1/4" concert poster for the Grateful Dead appearing with Levon Helm and the Cate Brothers and Roy Buchanan at the Lewiston Fairgrounds in Lewiston, ME on 9/6/1980.

 Designer unknown (photo by Bob Seidemann), medium-thin flat index stock poster is in good (B) condition; a set of pin/tack holes (all four corners), a moderate to heavy amount of creasing/wear along the right margin (several areas have tiny edge tears), a thin horizontal bend in the upper right corner (just to the right of "Festival") and a few light handling/surface dings here and there, otherwise fine.

 Uncommon early-'80's regional New England Grateful Dead concert poster from a VERY fondly remembered show. Listen to a great-sounding audience tape HERE:

https://archive.org/details/gd1980-09-06.nak300.friend.andrewf.101684.flac24