Carrico, J.: 46 Coss, Harold T., Jr.: Frontispiece, 2, 6, 8, 26, 28 right, 29 left, 31, 34 left, 37 all except bottom left, 38, 40, 41, 54, 56, 62, 63, 64, 65, 66, 68, 70, 71, 73, 74, 75, 78. Dodge, Natt N.: 32 Hoy, William: 44 Mang, Fred E., Jr.: 24, 28 left, 34 right, 37 bottom left, 39, 67, 77. Manley, Ray: 12 Olin, George: 10, 69, 82 Steenbergh, Warren: 35, 57 Unknown: 29 right _“As the Nation’s principal conservation agency, the Department of the Interior has basic responsibilities for water, fish, wildlife, mineral, land, park, and recreational resources. Indian and Territorial affairs are other major concerns of America’s Department of Natural Resources.” The Department works to assure the wisest choice in managing all our resources so each will make its full contribution to a better United States—now and in the future._ National Park Service U.S. DEPARTMENT of the INTERIOR ★ U. S. GOVERNMENT PRINTING OFFICE: 1972 O-456-399 [Illustration: Cover landscape.] Transcriber’s Notes —Retained publication information from the printed edition: this eBook is public-domain in the country of publication. —Relocated all image captions to be immediately under the corresponding images, removing redundant references like ”preceding page”. —Silently corrected a few palpable typos. —In the text versions only, text in italics is delimited by _underscores_. End of the Project Gutenberg EBook of Saguaro National Monument, Arizona, by Napier Shelton