10. A map needn't be chock-full of information. This page from Harry Lewellyn's Glovebox Guide shows the pertinent parts of the route only. Note the disclaimer: No scale. Not for navigation. There's enough information on this page to get you from A to B, but it's best to have another map with more detail along for backup. Each of the routes in the Glovebox Guide has a list of supplemental maps for this purpose.