2010 Milepost 62nd Edition
was recommended to me by several people. There are those who call it "the Bible of the Alaska Hwy.) The book is helpful but I'm not sure I'd go that far. It is chock full of details about the Alaska Hwy.
If you want to know what's available at the next town it'll be in the Milepost. If you are looking for road information it'll be in the Milepost. You will also find lots of ads which both lend and detract from the usability. Don't expect it to be a quick reference. The driver's assistant will probably need to read it aloud or look up points of interest. Even with its shortcomings it's a good reference for a drive to Alaska.Camping is a necessity in this state. Visitors will want a travel guide with the most current information available.I found Traveler's Guide to Alaskan Camping: Alaska and Yukon Camping with RV or Tent (Traveler's Guide series)
To fuel your passion for a drive to Alaska there's probably no better book than Alaska: A Novel
If you do read Alaska:A Novel be prepared. The next thing you will probably want to do is try making Alaska Sourdough. The starter is available here.