Lewis, Samuel - Clark, William - Harrison, Samuel - Bradford and Inskeep
Lewis and Clark, a legacy of science.
Shows facsimile of Lewis and Clark exploration map and contemporary physical map of approximately the same geographic coverage. Relief shown by hachures on facsimile map. Relief shown by shading and gradient tints on contemporary physical map. "The original Lewis and Clark map has been digitally enhanced and prepared by the U.S. Geological Survey. Reproduced from the original held in the Library of Congress, Geography...
Lewis, Samuel - Clark, William - Harrison, Samuel - Geological Survey (U.S.)
Lewis, Meriwether - Clark, William - Muhly, Frank - Lewis and Clark Trail Heritage Foundation
Military map of Nebraska and Dakota
Covers North Dakota, South Dakota, Nebraska, and portions of Minnesota, Iowa, and Kansas. Shows routes of 20 exploration or survey parties. Relief shown by hachures and spot heights. At the head of title: "Explorations & Surveys, War Dept. Hon John B. Floyd. Secy. of War." In upper left margin: "35th Congress, 1st Session, printed by order of the U.S. Senate." Includes notes. LC copy...
Warren, G. K. (Gouverneur Kemble) - Lewis, Meriwether - Clark, William - United States. Office of Explorations and Surveys