Passport to Your National Parks: Boston Area ed.
I left my trusty little passport at home, so had to make do with some stamps on scratch paper and Scotch tape after the fact.
Passport to Your National Parks: Grand Canyon ed.
Brought my little passport book on the river so I could collect a stamp from Phantom Ranch.
Passport to Your National Parks
Since I basically have the same interests as a 6-year-old, D bought this little book for me a few weeks ago.