22x28" poster features striking dayglo psychedelic design issued by The National Institute of Mental Health in Washington, DC in 1970. Designed to look like a black light concert poster or the type sold in headshops at the time, poster features large question mark at center w/"Will They Turn You On Or Will They Turn On You?" text at bottom. Question mark is surrounded w/psychedelic text listing various drugs that include - acid, speed, barbiturates, LSD, dexies, meth, grass, H, smack, hashish, pot, horse, bennies, THC, heroin, Mary Jane, snow and question mark features stylized images of sugar cube, pills and peyote. Bottom corners feature large "OD" letters flanking question text at bottom. Bottom margin has some aging w/margin wear. Margins have some aging and center right margin has pair of 1/8" tears. Scattered handling creases at upper left. Fine overall, but colors remain bright and poster would display VF if matted and framed.