The 'Milepost' is great for history and maps.
Mike & Terri Church's book 'Alaskan Camping' which includes Canada and the Yukon is the only reference you'll need for public campgrounds, RV parks and great boondocking spots. They lived in Fairbanks and traveled back and forth many times so they know the places to stop. As always, places close every year, so it's hard to keep updated but they are pretty much right on.
The last thing you'll need to purchase is the TourSaver 2/1 Coupon Book (online). One glacier cruise will pay for the book and you'll want to do at least one.