Pete,
Who is Mark??¿ Is there another dice book that I'm not aware of? As far as "crumbling" (actually called crystalizing) you can use clear nail polish to coat dice, which should stop it from deteriorating further. Be careful around the logos, kind of dab at it rather than long strokes. Just do this on dice that are starting to go...if they're in good shape, leave them alone!

Jeff has one book out for Vegas, one for Reno/Tahoe, and I think he's working on one for "small town" Nevada. Unless you want to really start collecting dice, you don't need to buy a book...just post a scan here, or email one to Jeff, he's always happy to help! I've snail-mailed many a photo-copy to him over the years!

Happy Chippin'!!
Pam