RARE Vintage Wes Wilson'Art Exhibit' Psychedelic Poster. Open Up and See' J. Walter Thompson Office Opening Exhibition.The item "Vintage Wes Wilson'Art Exhibit' Poster 1967 Psychedelic Grateful Dead Style" is in sale since Tuesday, December 05, 2017. This item is in the category "Entertainment Memorabilia\Music Memorabilia\Rock & Pop\Artists G\Graham, Bill\Posters". The seller is "blingbot1969" and is located in Los Angeles, California. This item can be shipped to United States.