Ken Babbs (born January 14, 1939) is a famous Merry Prankster who became one of the psychedelic leaders of the 1960s. He along with best friend and Prankster leader, Ken Kesey wrote the book Last Go Round. Babbs is best known for his participation in the Acid Tests and on the bus Further.
http://en.wikipedia.org/wiki/Ken_Babbs