Planning and Mapping
Maps
I you travel by land and plan to spend much time in a state I highly recommend you get one of DeLorme’s Atlas & Gazetteers. Acquire one of these well in advance of your trip as they are great for planning. They show campgrounds, points of interest, parks, beaches, wineries, Scenic drives, bike/hike routes, and much more. The maps are detailed enough that you should never get lost.
Campground books
There a couple of them: Woodalls and Trailer Life. I have used Trailer Life extensively and found it to be accurate and consistent. These books show you the campgrounds in the area you plan to stay and give you a good idea of