First ever recorded acid trip was today in in 1943!!
http://www.thenakedscientists.com/HTML/content/interviews/interview/1102/
66 years ago the famous Bicycle Day occurred. Bicycle Day was when Dr Albert Hofmann, who was a researcher in Basel was working on something which has subsequently spawned an entire revolution. The psychedelic revolution. He took a famous trip home on his bicycle home from work after inventing what subsequently became known as LSD - Lysergic acid diethylamide. He was doing it by studying a fungus that grows on wheat. His discovery was entirely accidental.