Hello all, I have been searching for this book for some time and I'm no closer now than when I started. The author who is American and spent time in San Francisco wrote an account of all psycedelic drugs from shrooms to ketamine with ratings for intensity, ease of use etc. I know it isnt Terrance McKenna or Timothy Leary and I believe it was written in the 80s. If anyone can identify this book it would be a great help! Cheers.