Original 1st printing 8&1/2 x 11" concert flyer for the Grateful Dead appearing at the Baltimore (MD) Civic Center on 5/26/1977.
Art by C. Regan/Grateful Graphics, thin flat stock flyer is in GORGEOUS mint/near mint to mint (A/A- to A-) condition; perhaps there is a tiny ding hiding somewhere, but for all intents and purposes, it is an absolutely KILLER example of this uncommon low-run late-'70's Dead flyer.
Check out a great-sounding audience recording of the show HERE:
https://archive.org/details/gd77-05-26.sbd.sacks.3224.sbeok.shnf