As one of the most remarkable and productive scientific explorations in American history, the Corps of Discovery expedition crossed the territory of the newly acquired but uncharted Louisiana Purchase.
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01. Wood River Camp, Illinois: December 1803 - May 14, 1804
02. St. Charles, Missouri: May 16-21, 1804
03. Fort Osage: June 23, 1804
04. Fort Atkinson, Nebraska: August 3, 1804
05. Onawa, Iowa: August 9-10, 1804
06. Sioux City, Iowa: August 20, 1804
07. Spirit Mound, South Dakota: August 25, 1804
08. Calumet Bluff, Nebraska: August 30-31, 1804
09. Fort Pierre, South Dakota: September 25-30, 1804
10. Fort Mandan, North Dakota: October 26, 1804 - April 7, 1805
11. Marias River, Montana: June 3-10, 1805
12. Great Falls, Montana: June 16 - July 14, 1805
13. Three Forks, Montana: July 27, 1805
14. Camp Fortunate, Montana: August 17, 1805
15. Lemhi Pass, Montana & Idaho: August 12, 1805
16. Lolo Trail, Idaho: September 12-21, 1805
17. Weippe Prairie, Idaho: September 20, 1805
18. Canoe Camp, Idaho: September 26 - October 17, 1805
19. Columbia River Gorge, Oregon: October 24, 1805
20. Mount Hood, Oregon: October 18, 1805
21. Cape Disappointment, Washington: November 18, 1805 - March 23, 1806
22. Salt Camp: December 7, 1805 - March 23, 1806
