Lewis and Clark kept extensive journals of their observations. They’re credited with recording 122 animals new to Western science and collecting more than 200 botanical specimens during the journey.

Toward the end of the expedition, Lewis and Clark began taking more of Sacagawea's advice on what routes to take. She and her ...

Often remembered merely for guiding Lewis and Clark, Sacagawea’s story is far more complex. Discover the deeper story behind the life of this Shoshone woman—beyond the expedition.

Hundreds of Lewis and Clark books are flooding the market—everything from The Journals of the Lewis and Clark Expedition to Gary Moulton’s magnificent 13-volume edition of the expedition’s ...

On Nov. 15, 1805, the Lewis and Clark Expedition reached the shores of the Pacific Ocean a year and a half after starting out from St. Louis, Missouri.The explorers poled keelboats and sometimes ...

At the Mandan Villages, Lewis and Clark say farewell to 4 of the Corps' members, including Sacagawea, Charbonneau, and Jean-Baptiste. The captains allowed John Colter to leave to start a new life ...

Lewis and Clark's two-year Tour of Discovery ended in September 1806 as the explorers returned to St. Louis with maps, sketches and journals detailing the region's plants, animal life, geography ...

A marker on the Lewis and Clark National Historic Trail in Montana. In 1804, Meriwether Lewis and William Clark began their journey along what is now the Lewis and Clark National Historic Trail.

But Clark named it after their interpreter Sacagawea’s son, Jean Baptiste, whom he nicknamed Pomp, which was short for Pompey. The infant and his mother traveled with Clark in a dugout canoe.

U.S. Army Captain Meriwether Lewis and 2nd Lt. William Clark — plus the Corps of Discovery — returned to St. Louis after epic travels to the Pacific Ocean on this day in history, Sept. 23, 1806.