Lewis and Clark By 30ersand Apr 30, 1803 louisiana purchas is signed. April 30 May 21, 1804 Lewis and Clark leave ST Louis May 21 ,1804 Jul 4, 1804 The expidition marks the first fourth of July. July 4 1804 Aug 30, 1804 Lewis and Clark meet with friendly Yankton Souix indians August 30,1804 Dec 24, 1804 Fort mandan Boult for the first winter. December 24,1804 Apr 7, 1805 Lewis and Clark send men back with arctifats to Thomas Jefferson. April 7,1805 Nov 1, 1805 Expidition comes to a halt becuase of bad weather Mar 23, 1806 Lewis and Clark head twoards home Sep 23, 1806 Lewis and Clarks crew returns to home Dec 10, 1806 Lewis and Clarks team builds fort clastop.
