YOUR NATIONAL PARKS vintage 1917 Author:Enos A Mills As the book has no ISBN number the following description applies ONLY to this copy of this book. This book is over 90 years old. — 1917 ex library copy from the College of the Pacific. Tanning with age. Brown Boards which are frayed on the ends. Book includes many illustrations and text on all of the Western National parks: Yellowstone, Yosemite,... more » Sequoia, Crater Lake, Glacier National Park, Mesa Verde, Rocky Mountain, Grand Canon, John Muir and several more.« less