Washington DC: Government Printing Office, 1940. First edition. Paperback. 1940, First Edition. Professional Paper 193-D of the US Dept. of the Interior. Pages 69-80. Seven fold-out charts and maps + large geological survey map in rear pocket. VG: Light rub and crease to edges of wraps and pages. Unmarked. Scarce.....
Kansas City, MO: Fred Harvey, 1920. Third Edition. Wraps. 8 x 5.5 inches, softcover, very good. 75 (5) pp, illustrated, two full page maps.
Grand Canyon, Arizona: Fred Harvey, 1940. later edition. Paperback. 1940. Eighteenth edition, revised and enlarged. Pictorial wraps and endpapers, 8vo. 74pp. illustrated, 2p. map. Very good. Light rubbing, soil to wraps. Internally bright and unmarked.
Washington, D.C. National Geographic Society, 1913. First edition. Paperback. Wraps, 10x7 inches. Good with expected wear and soil. Monthly magazine of geography, history, nature, science, and photojournalism.