The Lewis and Clark Expedition from , to , also known as the Corps of Discovery Expedition, was the first expedition to cross the western portion of the United States.In the s, the federal government memorialized the winter assembly encampment, Camp Dubois, as the start of the Lewis and Clark voyage of discovery and in it recognized Pittsburgh .Appointed by Thomas Jefferson, Meriwether Lewis and William Clark left St. Louis, Missouri, in May and reached the Pacific Ocean near what would become Columbia, Oregon, in November . Their main tasks were to survey the new lands west of the Mississippi River and to locate a water route to the Pacific. Explore Their Journey..Map of Expedition’s Route, The Expedition’s Route, Portage and Falls of the Missouri River.In May, , Meriwether Lewis and William Clark set out on an amazing expedition across the Louisiana Territory. These true American heroes faced unknown people, harsh conditions and unexplored lands to secure a place in history as two of the world’s greatest explorers..
Lewis and Clark Expedition Headwaters of the Missouri River, detail from Lewis and Clark Expedition map by William Clark and Meriwether Lewis, . Library of Congress, Geography and Map Division, Washington, D.C..This map is a collaboration between the NASA, USGS and the Lewis and Clark National Historic Trail. Learn more about the trails that encompass the National Trails System. This Story Map Journal highlights the High Potential Historic Sites identified along the Lewis and Clark National Historic Trail. The Alice Creek Historic District is part of .