April 22, 1803 | Letter From Thomas Jefferson to Lewis Harvie, April 22, 1803 Thomas Jefferson writes to Lewis Harvie, informing him of Meriwether Lewis' progress in preparing for his expedition. Jefferson also reassures Harvie that questions between Spain and France over the Louisiana Territory will not interfere with the United States' acquisition of the region.
January 22, 1804 | Letter Thomas Jefferson to Meriwether Lewis, January 22, 1804 Thomas Jefferson informs Meriwether Lewis of the steps the United States is taking to consolidate its position in the land along the Mississippi.