The crossing of the Missouri River at Arrow Rock, which was recorded in the 1700s, played an important role in early explorations, such as the Lewis and Clark expedition in 1804, that led to the opening of the American West. A ferry was...

Pass crossed by the Lewis and Clark Expedition in August 1805.

Meadow of camas, whose roots were basic food for Nez Perce, where the Lewis and Clark Expedition emerged from Lolo Trail.

Monument to the only member of the 1805 Lewis and Clark expedition who died during the trip. First declared U.S. National Historic Landmark.

Thomas Jefferson (April 13, 1743 - July 4, 1826) was the third President of the United States (1801-1809), the principal author of the Declaration of Independence (1776), and one of the most influential Founding Fathers for his promotion...

Transcript of a televised documentary about Lewis and Clark explains why Alexander Mackenzie's Voyages from Montreal served as a catalyst for their cross-continental expedition.

Read about the first established European village in Missouri. Lewis and Clark made their way through this town on their expedition.