Lewis & Clark's fames advencer By wojcikjo109 Jan 18, 1803 President Jefferson sent a confidential message to Congress, stating in part, “The river Missouri and the Indians inhabiting it, are not as well known as is rendered desirable by their connection with the Mississippi. http://www.ourheritage.net/index_page_stuff/Following_Trails/Lewis_and_Clark/Lc_timeline.html Feb 28, 1803 U.S. congress agreed on $2,500 to spened on the expedtion. Period: May 14, 1804 to Sep 23, 1806 They discovered 122 new animals and 178 new plants. Aug 20, 1804 Day 99 Sgt. Floyd dies at age 22 from a ruptured appendix and he was the only one that died on the expadition. URL Feb 11, 1805 Sacagawea gives birth to a baby boy named Jean Baptiste. May 14, 1806 They discoverd 122 new animals and 178 new plants. lewis & clark fun facts