More than 100 national parks that usually charge admission will be free on these ... junior ranger program includes a free NASA/NPS Spaceflight Explorer Junior Ranger booklet for ages five to 12. The ...

The National Park Service, established just three years prior, was intended to unify and manage the country’s national parks. Its director, Stephen Tyng Mather, and his conservationist collaborator ...

The National Parks: America's Best Idea is the story of ... Accompanying the series is a companion book, written by Dayton Duncan, and introduced by Ken Burns, which has been published by Alfred ...