106 - Affiche Ancienne Original vintage music event advertising poster - Help end Marijuana Prohibition. Free John Sinclair and political prisoners - counterculture concert that took place on 24-25 January 1970 at the Grande Ballroom and Eastown Ballroom in Detroit. The poster features a design by an American graphic artist Gary Grimshaw (1946-2014), depicting a flag of the United States engulfed in fire, a leaf of cannabis appearing at the burned spot, two red stars with White Panthers, for an American anti-racist and anti-capitalist political collective, and a list of performers below: SRC, MC5, Up, Stooges, Scorpion, Commander Cody, Amboy Dukes, Bob Seger System, Mitch Ryder and the Detroit Wheels, Virgin Dawn, Wilson Mower Pursiot, Rationals, Jagged Edge, Richmond, All the Lonely People, Sky, Brownsville Station, Floating Circus, Sunday Funnies, Shaky jake, Blues Train, and 3rd Power, with the speakers Abbie Hoffman, Ken Cockrell, Skip Taube, and Ed Sanders. John Alexander Sinclair Jr. (1941-2024) was an American poet, writer, and political activist, a founding member of the White Panther Party. He was sentenced to ten years for distribution of marijuana in 1969; the sentence created a noisy protest movement led by prominent figures of the 1960s counterculture. Sinclair was released in 1972 by the Michigan Supreme Court when the possession of marijuana law was declared unconstitutional. Excellent condition, backed on board. Country of issue: USA, designer: Gary Grimshaw, size (cm): 54x41, year of printing: 1970.