A map from 1898 of the United States showing general elevations, water depths, and terrain features, including the Pacific Slope, Great Basin, Rocky Mountain Plateau, Great Plains, Mississippi Valley, Gulf Plain, Appalachian Highlands, and the Atlantic Plain. The map is color-coded to show land elevations from sea level to over 6,000 feet, and water depths to over 9,000 feet, illustrating the submerged continental plateau and the submerged Florida platform.