Though primarily a biography of Meriwether Lewis, this book also provides sketches of Thomas Jefferson, William Clark, Sacagawea, & other contemporaries....

"With a new introduction by the author celebrating the bicentennial of the Louisiana Purchase"--Cover. Differs from 511 p. edition in the insertion of two new chapters: Lewis as ethnographer: the Shoshones as new ch. 23; Lewis as ethnographer: the Clatsops and the Chinooks as new ch. 27. "August 2002"--Introduction (p. 16)

Youth,1774-1792 -- Planter,1792-1794 -- Soldier,1794-1800 -- Thomas Jefferson's America,1801 -- The President's Secretary,1801-1802 -- The origins of the expedition,1750-1802 -- Preparing for the expedition, January-June 1803 -- Washington to Pittsburgh, June-August 1803 -- Down the Ohio, September-November 1803 -- Up the Mississippi to winter camp, November 1803-March 1804 -- Ready to depart, April- May 21,1804 -- Up the Missouri, May- July 1804 -- Entering Indian Country, August 1804 -- Encounter with Sioux, September 1804 -- To the Mandans, Fall 1804 -- Winter at Fort Mandan, December 21, 1804- March 21, 1805 -- Report from Fort Mandan, March 22-April 6, 1805 -- From Fort Mandan to Marias River, April 7-June 2, 1805 -- From Marias River to the Great Falls, June 3-June 20, 1805 -- The Great Portage, June 16-July 14, 1805 -- Looking for the Shoshones, July 15-August 12, 1805 -- Over the Continental Divide: August 13-August 31, 1805 -- Over the Bitterroots: September 1-October 6, 1805 -- Down the Columbia: October 8-December 7, 1805 -- Fort Clatsop: December 8, 1805-March 23, 1806 -- Jefferson and the West: 1804-1806 -- Return to the Nez Percé: March 23-June 9, 1806 -- The Lolo Trail: June 10-July 2, 1806 -- The Marias Exploration: July 3-July 28, 1806 -- The Last Leg: July 29-September 22, 1806 -- Reporting to the President: September 23-December 31, 1806 -- Washington: January-March 1807 -- Philadelphia: April-July 1807 -- Virginia: August 1806-March 1807 -- St. Louis: March-December 1808 -- St. Louis: January-August 1809 -- Last Voyage: September 3-October 11, 1809.