1 See also Lewis and Clark Expedition.

2 In 1806 , the Lewis and Clark expedition returned to St. Louis from the Pacific Northwest.

3 Many were collected by the members of the Lewis and Clark expedition and brought back to President Jefferson.

4 The region was bypassed during the Lewis and Clark Expedition in the early 19th century.

5 In 1806, John Colter, a member of the Lewis and Clark Expedition,[] left to join a group of fur trappers.

6 As president, he was involved with the Louisiana Purchase of 1803 and the Lewis and Clark Expedition.

7 The current dollar coin, which made its debut in 1998, features Sacagawea, the young Shoshone interpreter who guided the Lewis and Clark expedition.

8 By the time white explorers first entered the region during the Lewis and Clark Expedition in 1805, they encountered the Nez Perce, Crow and Shoshone tribes.

9 The Gateway Arch in St. Louis, Missouri, frames fireworks set off during the 200th anniversary of the Lewis and Clark expedition.

10 So, a near-legendary figure in the history of the American West for her indispensible role on the Lewis and Clark Expedition, Sacagawea has become an enigma for historians seeking to trace her life.

11 In addition to the state quarters, the mint is rolling out a series of commemorative nickel designs celebrating the Lewis and Clark expedition.