Close-up: U.S.A., the North Central States. Produced by the Cartographic Division, National Geographic Society. William T. Peele, chief cartographer; David W. Cook, associate chief cartographer.National Geographic Society (U.S.). Cartographic Divisionc1974."Albers conical equal-area projection.""Supplement to National Geographic, March 1974, page 378A, vol. 145, no. 3 ... "Folded title: Close-up: U.S.A., North Dakota, South Dakota, Nebraska, Minnesota, Iowa, Missouri.Includes list of "Abbreviations."Relief shown by shading and spot heights.cartographic