Grand Canyon National Park — and the book you are holding— evince that truth." The Grand Canyon Conservancy, the park's official nonprofit partner, also supported this book's mission.

Fifteen years later, when Congress again refused to create a national park, President Theodore Roosevelt stretched the limits of the Antiquities Act and established the Grand Canyon National Monument.

Everything to know about Grand Canyon National Park Everything to know about Grand Canyon National Park Everything to know about Jasper National Park Everything to know about Jasper National Park ...

That is longer than the Grand Canyon, which is 277 miles (446 km) from one end to the other, according to the National Park ...