Lewis and Clark Tyler W. By 20baltrav Apr 30, 1803 Louisiana Purchase Mar 10, 1804 Travled to St. Louis May 14, 1804 Beginning up the Missouri River Aug 3, 1804 North of Present-day Sep 1, 1804 Corps enters the Great Plains Jan 1, 1805 Corps attened a buffalo dance Feb 11, 1805 Sacagawea's son Apr 29, 1805 Corps marvels at the aundance of game Jun 1, 1805 The Corps reaches an unknown fork in the Missouri May 6, 1806 The men reach St. Louis