Lewis And Clark By 20CAHANS Apr 30, 1803 Louisiana PUrchase Aug 5, 1803 Keelboat constructed in pittsburg overseen by Lewis Feb 3, 1804 Sacagawea gives birth to a baby boy who's name was Jean Baptise Aug 3, 1804 Corps of discovery meet with representatives of the Oto missouri Indians Apr 29, 1805 Lewis and anouther hunter kill a large bear May 29, 1805 Lewis names the Judith river after a girl he hopes to mary in Virginia Jun 13, 1805 Lewis goes ahead of the expedition and finds the Great Falls Jul 31, 1805 The expedition reaches the three forks of the Missouri river. Aug 8, 1805 Sacagawea relizes they are nearing the head waters of missouri Aug 17, 1805 Lewis and Clark find the Shoshones indian tribe Aug 14, 1806 Lewis and Clark expidition return to D.C