August 14, 1779ľAugust 7, 1780 | Journal Daniel Smith's Journal (1779-1780) In 1779, with other surveyors and adventurers from Virginia and North Carolina, Daniel Smith and Thomas Walker set out to extend the Virginia-North Carolina boundary line far beyond the Cumberland Gap. From August 1779 until August 1780, the men traveled from southern Virginia, to the Falls of the Ohio River, and back to Virginia. In addition to their survey duties, the men worked secretly for Thomas Jefferson, meeting with George Rogers Clark at the Falls of the Ohio River to scout locations for the planned Fort Jefferson.
January 24, 1780 | Letter Thomas Jefferson to Joseph Martin, January 24, 1780 Thomas Jefferson instructs Joseph Martin, agent to the Cherokee, to purchase or trade for land for Fort Jefferson, currently being plotted by George Rogers Clark.
January 29, 1780 | Letter Thomas Jefferson to George Rogers Clark, January 29, 1780 Thomas Jefferson issues instructions for the construction of a fort on the Falls of the Ohio, offering the services of surveyors Thomas Walker and Daniel Smith, who are in the field plotting a line between North Carolina and Virginia. Addressing the need to defend the western frontier from British advances, Jefferson authorizes Clark's recruitment of a battalion of soldiers, with land warrants issued as payment. Jefferson also expresses concern over the establishment of peaceful relations with French settlers and Native groups already in the region.
January 29, 1780 | Letter Thomas Jefferson To Thomas Walker and Daniel Smith, January 29, 1780 In this secret communique, Thomas Jefferson instructs the surveyors to assist George Rogers Clark in selecting a spot for the fort to be constructed at the falls of the Ohio River.
February 8, 1784 | Letter George Rogers Clark to Thomas Jefferson, February 8, 1784 Responding to Thomas Jefferson's December 4, 1783, missive, George Rogers Clark regretfully opts out of any future U.S. expedition to the West. Clark does suggest that such an expedition be undertaken by a small group of men schooled in Native languages and traditions.