His book is still available as of last May. I called down to the Ace Hardware store and sent them a money order and they shipped it to me. They also have a map of the lake available to. I would give them a call and see if they still have them. I also called the lake chelan chamber of commerce for info and they were very helpful, I'd give them a call to. I believe they also have a website. Here I found a couple.
http://www.lakechelan.com/

http://www.nps.gov/lach/

http://www.cityofchelan.com/

http://www.chelanvalley.com/boatcamp.htm


http://www.visitlakechelan.com/activities/fishing_lake_chelan.html

I hope these might help you out.
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PELICAN