I am almost finished reading the book, "Parkinson's Disease: The Mystery, the Search and the Promise" by Sue Dauphin, ISBN 0-9620354-1-6. I got the book through our Health Sciences Library on an interlibrary loan. This is a very interesting, well-written, informative book. When the due date on the loan was up (the library agreed to extend it), I decided that I will buy my own copy. I recommend this book very highly.