 Later, on October 24, 1968, LSD was added to the list of Schedule 1 substances, which made it illegal to possess, manufacture, or use for any purpose in the United States.At the end of 1966, Nina Graboi, a friend and colleague of Leary's who had spent time with him at Millbrook, became the director of the Center for the League of Spiritual Discovery in Greenwich Village.The Center opened in March 1967.