So. I have a National Park Service Passport. And like my actual passport, I'm obsessed with it. I was introduced to this magically educational book/activity by a fellow roadie, Mr. John Merritt. Perfect for days off in random cities and the like. For any of you crazy road kids who I've not already coerced into purchasing one of these suckers or purchased one for you, well, they make lovely Christmas gifts for the frequent traveler/roadie.