This is a great example of what a travel guidebook should be. It has extensive descriptions of the places it covers - the road network, national parks, mountain ranges, history, towns, campgrounds, pertinent laws, restaurants and shopping, wildlife, the geology of the mountains ...
It's well illustrated with several kinds of maps and lots of great photos, many of them NatGeo-worthy in quality. It makes me feel that I know more about this area after reading this (jumping around in it, as it's not really the kind of book to read front-to-back) than about some places I've actually lived. It also makes me want very much to see it in person. That's a trip I'm looking forward to making someday.