German psychedelic researcher Hanskarl Leuner visiting Spring Grove (from left: Stan, Karen Leihy, Bob Leihy, Hanskarl Leuner Sandy Unger, and Bill Richards)

• Grof website:
  in English (http://stanislavgrof.com/)
  in Russian (http://www.stangrof.ru/).
• Problems:
  email john@jmckenzie.com