 With the ability to glow and vibrate under ultraviolet light, the posters could simulate the sensations and visual distortions one experienced during an acid trip.In the United States, blacklight posters emerged as part of the psychedelic fashion scene between 1967 and 1969.The style was popular in advertisements for concerts at venues like the Fillmore and Avalon Ballroom, and further promoted and commercialized by companies like Pandora Productions (established in Minneapolis, 1964) and the Houston Black Light Company (Houston, 1969).