The southwestern United States / executed in the Cartographic Section of the National geographic magazine ; James M. Darley, chief cartographer ; culture by Apphia E. Holdstock ; research by Wellman Chamberlin ; physiography by John J. Brehm and H.E. EastNational Geographic Society (U.S.). Cartographic Section1940Copyright: The National Geographic Society.Includes index of routes of exploration, text and ill. of notable sites and events, and state seals.Issued with the National geographic magazine, v. 77, no. 6, June 1940.Mounted on linen.Relief shown by hachucartographic