The Passport To Your National Parks® program, launched in 1986, provides information and encourages visitation to all of America’s national parks. It includes a passport book that lists all national parks in the United States and U.S. territories, and provides space for ‘cancellation’ stamps which can be found in almost every national park in the system. The program also encompasses several other supporting publications, such as the Kids’ Passport To Your National Parks Companion® and the Passport to Your National Parks Explorer Edition®, which is a larger, more-detailed version of the original passport book.
The 2.5" x 2" sticker sets are designed to be placed in your Passport to Your National Parks book. The 2 part set can also be used for scrapbooking and affixing to any other momento of your trip to either Wind Cave National Park or Jewel Cave National Monument. One sticker has a photo of the cave, the other sticker has a short description of the park and the package back provides more detailed park information.