Poster printed with yellow and black ink on white paper. "San Francisco Mime Troupe / Presents / The Great Air Robbery" appears at upper left in one-point perspective. The poster combines multiple scenes including an alien carrying a woman, a man in a trench coat and fedora, helicopters, soldiers running with large machine guns, a man holding a test tube surrounded by plants, and a woman in a dress and platform heels with a large afro. Text handwritten in black ink on the bottom reads, "Free! / Live Oak Park / Sun-Sept. 22-2PM." "1974" is handwritten in red ballpoint pen at bottom right.