National Park Pass Books...It's a must have...

When you visit a US National Park do your self a favor and purchase a National Parks Pass Book...

Each park has it's own stamp and some very creative additional stamps reflecting the uniqueness of that park and the environment to which they belong.
You can keep a record of your visits over the years and in some cases visit a park along the way just to stamp your book and possibly enjoy the visit and slow down your journey just a little...
You may find yourself enjoying a beautiful sunset...