National Parks Portfolio. By Robert Sterling Yard. Cloth bound and illustrated with more than 300 beautiful photographs of the national parks. Superintendent of Documents, Washington, D. C. Price $1.50.
Booklets about the national parks listed below may be obtained free of charge by writing The National Park Service, Washington, D. C.
Acadia, Maine Carlsbad Caverns, N. Mex. Crater Lake, Oreg. General Grant, Calif. Glacier, Mont. Grand Canyon, Ariz. Grand Teton, Wyo. Great Smoky Mountains, N. C.-Tenn. Hawaii, Hawaii Hot Springs, Ark. Lassen Volcanic, Calif. Mount McKinley, Alaska Mount Rainier, Wash. Platt, Okla. Rocky Mountain, Colo. Sequoia, Calif. Shenandoah National Park, Va. Wind Cave, S. Dak. Yellowstone, Wyo.-Mont.-Idaho Yosemite, Calif. Zion and Bryce Canyon, Utah
AREAS ADMINISTERED BY THE NATIONAL PARK SERVICE
Footnotes
[1]Approximate dating. Exact dating by the methods of tree-ring chronology are yet to be accomplished.
[2]The Secret of the Southwest Solved by Talkative Tree Rings, by A. E. Douglass: National Geographic Magazine, December 1929.
[3]For complete bibliography apply at the park museum or write to the Superintendent, Mesa Verde National Park.
[4]Copies in Mesa Verde Museum Library.