441 pages, one PDF, in your hands the moment your payment goes through.
578 free campsites with coordinates in decimal degrees you paste straight into a phone, plus 155 low cost sites for the states where free ground is thin.
48 state chapters, the highway corridors run end to end, the free ground nearest each national park, and four appendices: the regulations, the stay limits, the office directory, and how to check any entry yourself.
It is a file, so it opens with the radio off, which is exactly where you will need it. Buyers of this edition get next year's at no charge.