I am glad you like the book. It is very thorough. I've heard there are campgrounds in California that are not listed in his book, but not many. He also has a book on hiking in California. Its also a good book but not nearly as thorough.

I haven't been to Carr Lake, but looking at the Tahoe National Forrest website, I get the feeling that the hike in is on an access road. Best of luck!