February 27, 1803 | Letter Thomas Jefferson to Benjamin Smith Barton, February 27, 1803 Thomas Jefferson informs Benjamin Smith Barton of Meriwether Lewis' upcoming journey, excited at the prospect of the scientific advances that will result.
May 13, 1803 | Letter Bernard Lacépède to Thomas Jefferson, May 13, 1803 Bernard Lacépède applauds Jefferson's dedication to exploration and expansion, predicting success and the expansion of United States trade and communication because of it.