Original 1st printing 16&1/2 x 24" concert poster for the Grateful Dead appearing at Madison Square Garden in New York City, NY from 9/14-16, 18-20 and 22-23/1988.
Art by Jackson, medium-thin glossy stock poster is in near mint to excellent (A-/B+ to B+) condition; other than a few stray pinch dings/fingerprints here and there, a couple of tiny edge creases and tiny nips in the upper right margin/edge, a few little stress bends scattered along the bottom margin and a soft bend or two hiding within the image area, it is a SUPERB example of this KILLER late-'80's Grateful Dead poster from a fondly-remembered set of NYC shows (attended by none other than the mighty King Kong himself!).
Check out a fine-sounding audience tape of the 9/16 show HERE:
https://archive.org/details/gd1988-09-16.fob.senn441.mccue-zaleski.ford.105567.flac16