November 29, 1782 | Letter Arthur Campbell to Thomas Jefferson, November 29, 1782 Arthur Campbell writes to Thomas Jefferson about fossil finds in the West and possible a possible western border that may result from negotiations with the British.
March 1, 1784 | Report Resolutions from the Committee for the Western Territory, March, 1, 1784. With Jeremiah Townley Chase and David Howell, Thomas Jefferson issues recommendations for the division and government of the western edges of United States territory. The preferred boundaries of future states are laid out and vaguely classical and Indian names are given the various regions. Congress did not adopt the Ordinance as Jefferson submitted it, primarily rejecting the abolition of slavery in the region and Jefferson's nomenclature. As passed by Congress, it became the Ordinance of 1784.
May 21, 1784 | Letter Thomas Jefferson to James Monroe, May 21, 1784 Thomas Jefferson worries about the evolving western borders and territory of the United States.
May 20, 1785 | Statute Land Ordinance of 1785. Until the Homestead Act of 1862, this ordinance, with detailed instructions as to the sectioning of land into township and plats, was the guiding document in the division and dispersal of Western lands.
May 10, 1789 | Letter Thomas Jefferson to George Washington, May 10, 1789 Thomas Jefferson expresses his hopes for the future exploration and navigation of the Ohio and Potomac Rivers, adding a discussion about other avenues of water navigation that could promote western expansion and commerce. Jefferson also informs Washington he hopes to return to the United States, having appealed to John Jay for permission to do so. The letter also includes references to the role of the Marquis de la Fayette in French politics.
January 18, 1803 | Report Thomas Jefferson to United States Congress, January 18, 1803 Thomas Jefferson's confidential report to Congress planned westward expansion and the United States' relationship with Native Americans.