The Acid Tests Testing were a series of parties Social_event held Hold by author Ken Kesey primarily in the San Francisco Bay Area during the mid-1960s , centered entirely on the use Using of , and advocacy of , the psychedelic drug LSD , also known as `` acid '' .

LSD was not made Action illegal Legality in California until October 6 , 1966 .

Other people , such as LSD chemists Owsley Stanley and Tim Scully , were involved Cause_to_be_included as well .