The map combines three layers: the 1814 published map of the Lewis and Clark expedition which was based on William Clark’s manuscript map and engraved by Samuel Lewis; a vector layer in red showing the route of the expedition going out and returning in the period1803 to 1806; and a vector layer in green showing the 591 separate campsites of the expedition along the route.

Map published by David Rumsey Map Collection

In category Culture & History