18x28” thin cardboard poster for Sept. 24, 1988 benefit concert at Madison Square Garden in New York City that featured The Grateful Dead, Bruce Hornsby & The Range with special guest appearance by Suzanne Vega. Poster art by Robert Rauschenberg includes abstract rainforest bkg. with large skull image. These posters were given away with purchase of a concert ticket, which cost several hundred dollars. Exc. Comes with 5.5x8.5” program with monkey design on cover that has been signed on inside front page by Jerry Garcia and on opposite page by Bob Weir. Last 2 pages have “After Show Gala Reception For Rainforest Guest/Staff Pass” ticket and backstage pass pasted on provided pages. Program has some handling wear but is VF. Comes with Hake’s COA.