February 12, 1799 | Letter Daniel Clark to Thomas Jefferson, February 12, 1799 Daniel Clark, of New Orleans, writes to Thomas Jefferson on behalf of Philip Nolan, promising a summary of Nolan's information and impressions about New Mexico and the Louisiana Territory. Clark also uses the letter to introduce Jefferson to the work of William Dunbar.
November 12, 1799 | Letter Daniel Clark to Thomas Jefferson, November 12, 1799 Daniel Clark writes of Philip Nolan's close brush with death in New Mexico and informs Jefferson of Nolan's plan to travel to the United States. Clarks takes the liberty of sending along a box of pecans for Jefferson.
May 29, 1800 | Letter Daniel Clark to Thomas Jefferson, May 29, 1800 Daniel Clark writes to Jefferson of Philip Nolan's departure for the United States, and notes that an inhabitant of the land "West of the Mississippi" accompanies him for Jefferson's edification, so that he may be "the first to acquire particular information of a Country now almost unknown to the U.S."
July 13, 1801 | Letter Thomas Jefferson to William C. C. Claiborne, July 13, 1801 Thomas Jefferson writes to William Claiborne with news of his appointment as Governor of Mississippi, noting the importance of the region as "the principal point of contact between Spain and us, & also as it is the embryo of a very great state." Jefferson also warns Claiborne of the importance of encouraging the residents of Mississippi to embrace party politics similar to his.
July 17, 1803 | Letter Thomas Jefferson to William Dunbar, July 17, 1803 Thomas Jefferson writes to William Dunbar of the acquisition of Louisiana Territory, asking for information and statistics to place before the Congress.