Lewis and Clark Expedition Route Map - Historical Journey Across the West #3829058 (License: Personal Use)

The map highlights the Corps of Discovery’s transcontinental journey from Missouri to the Pacific Ocean and back, with distinct lines for the main expedition (blue), Meriwether Lewis’s eastern return via the Marias River (orange), and William Clark’s eastern route through the Yellowstone River (red). States traversed include Missouri, Kansas, Nebraska, Iowa, South Dakota, North Dakota, Montana, Idaho, Oregon, and Washington. Key geographic features like the Missouri and Columbia Rivers are implied by the routing.

Used in educational resources, history websites, museum exhibits, and travel guides about early American exploration; serves users seeking visual understanding of the expedition’s geography and logistics.