Relief shown by spot heights. Panel title: Lewis and Clark in the Rocky Mountains : the Lewis and Clark National Historic Trail commemorates one of our nation's grandest journeys of exploration. "This detailed map/brochure provides an historically accurate account of the Lewis and Clark Expedition through the Rocky Mountains of western Montana and east-central Idaho." Includes inset of the complete trail and list of ...
Saindon, Robert A. - United States. Forest Service. Northern Region
Relief shown by hachures. At top of map: Scale of miles 2 miles to the inch. Mounted on cloth backing. Map resulting from Powell expedition, 1871. Available also through the Library of Congress Web site as a raster image.