Louisiana Purchase and the Lewis and Clark Expedition (1803–1806)

1. Louisiana Purchase treaty signed in Paris

   Apr 30, 1803Labels: Robert R, James Monroe, Fran ois

   • Natl Archives
   • Britannica

2. U.S. Senate approves Louisiana Purchase treaty

   Oct 20, 1803Labels: U S

   • U S Senate
   • History com

3. Jefferson proclaims treaty ratification and exchange

   Oct 21, 1803Labels: Thomas Jefferson

   • Founders Archives

4. Louisiana transferred at New Orleans ceremony

   Dec 20, 1803Labels: New Orleans

   • Three Flags Day

5. Upper Louisiana transferred at St. Louis ceremony

   Mar 10, 1804Labels: St Louis, Three Flags

   • Camp Dubois
   • Three Flags Day

6. Corps of Discovery departs Camp Dubois

   May 14, 1804Labels: Corps of, William Clark

   • NPS Camp Dubois
   • Discover L C

7. Sergeant Charles Floyd dies on expedition

   Aug 20, 1804Labels: Sergeant Charles

   • UNL Journals
   • NPS Floyd

8. Sacagawea and Charbonneau join the expedition

   Nov 1, 1804Labels: Sacagawea, Toussaint Charbonneau

   • NPS Hiring
   • Discover L C

9. Fort Mandan completed for wintering over

   Nov 27, 1804Labels: Fort Mandan, Mandan

   • NPS Fort Mandan
   • Fort Mandan

10. Lewis crosses Continental Divide at Lemhi Pass

    Aug 12, 1805Labels: Meriwether Lewis, Lemhi Pass

    • Discover L C
    • Lemhi Pass

11. Clark records “Ocian in view” near Pacific

    Nov 7, 1805Labels: William Clark, Columbia River

    • NPS LEWI
    • HistoryLink

12. Expedition consults/votes on winter quarters location

    Nov 24, 1805Labels: York, Sacagawea

    • NPS Vote
    • NPS Nov 24

13. Corps begins building Fort Clatsop

    Dec 10, 1805Labels: Fort Clatsop

    • NPS Fort Clatsop

14. Corps departs Fort Clatsop for return journey

    Mar 23, 1806Labels: Fort Clatsop, Corps of

    • NPS Leaving
    • Discover L C

15. Lewis and Clark expedition returns to St. Louis

    Sep 23, 1806Labels: St Louis, Corps of

    • History com