GRATEFUL DEAD JEFFERSON AIRPLANE BIG BROTHER & THE HOLDING CO. QUICK SILVER MESSENGER SERVICE THE CHARLATANS in a benefit concert for the Haight Ashbury Legal Organization (HALO) Original Concert Poster Winterland San Francisco, California 1967. This is an original first printing concert poster in excellent or Near Mint condition. It features wonderful art by famed artists, Rick Griffin, Stanley Mouse, and Alton Kelley. It measures approximately 14 by 18 and 1/4 inches. I also have available another HALO poster which is hand signed by Stanley Mouse.