Lewis and Clark Expedition By 20MAHARM Apr 30, 1803 The signing of the Louiana Purchase The signing of the Louisiana Purchase May 14, 1804 The Corps Discovery left Camp Wood and started its journey up the Mississippi River Aug 3, 1804 North of Present Day Omaha, the Corps holds a council with the Oto and Missouri Indians Aug 20, 1804 Sergeant Charles Floyd dies of natural causes near present-day Sioux City, Iowa Feb 11, 1805 Sacagawea's son Jean is is Baptiste Charbonneau or Pompu was born with Lewis' help May 16, 1805 One of their boats nearly overturned and Lewis credits Sacagawea with saving their most important possessions Aug 17, 1805 The main party arrives at the Shoshone camp, where Sacagawea reconizes the chief as her long-lost brother Nov 24, 1805 Having reached the Pacific, the entire expedition including Sacagawea and Clark's slave, York take a vote. Mar 23, 1806 After a winter of only 12 days without rain the men set out for home Sep 23, 1806 Return from expedition