I use the Good Sam Road Atlas that I got at Camping World. Like it cause the maps are printed in large print and makes it so much easier to see the route numbers and so forth. One thing I did when I took my trip west, was send for information from each state I was going through and then routed myself according to what I wanted to see on my way to and from Yellowstone National park as well as made inquiries on here regarding some nice area roads to travel down. Liz is a good authority on that as she has been just about everywhere. Others who full time are good sources for info too. Good Sam has a really good travel planner too. And it gives you info like tunnels, low bridges etc. You can work with it on their website, let them give you a route and then get out your maps and see if you like it and make your own changes, then put them into the route planner. I did that on my trip west and it was great. I don't travel with a GPS, I prefer to do it the old fashioned way