Best Campground book for our first TM trip!

[dryadi]

So we are so excited to have bought our first TM. We are planning a trip cross country from FL to Oregon. I thought I read a thread where someone posted the name of a really good book to buy to call ahead and pick campgrounds as you go. Anybody know the name of a good book ? And is there a thread with cross country tips on camping with TM? We are newbies but I have four months to plan and I am SOOOO excited !!!