Rare country of origin US 1 sheet poster for this classic hippy psychedelic drug exploitation movie from 1968. Films and posters rarely capture the zeitgeist like this with wild artwork and naked women on the poster. This poster was printed slightly oversize at 28" x 41.75". This is normal for this title, not a mistake. Every Friday, office workers go to the White Pyramid, a 50-foot tower of the drug LSD.