Le Poste des Cadodaquious was a small French fort founded in 1719;[1][2] it was located northwest of Texarkana, Texas in today's Bowie County.
The fort was constructed by Bénard de La Harpe as a part of his opportunistic advance following the traces the Spanish had had left as they built similar military outposts.
La Harpe would later move on to the northwest, using the post as a starting point, and encounter various groups of Wichita with which the French soon set up a trade network.
A small settlement of French colonists developed in tandem with the fort for a number of years; at least two of Grappe's children, François and Marie Pelagie, were born there.
Ralph A. Smith, trans., "Account of the Journey of Bénard de La Harpe," Southwestern Historical Quarterly 62 (July, October 1958, January, April 1959).