In 1673, Louis Jolliet and Jesuit Father Jacques Marquette discovered and explored the Mississippi River. Jolliet was convinced that it emptied into the Gulf of Mexico. Some years later in his diary, Jean-Baptiste Minet describes the explorations of René-Robert Cavelier de La Salle. In the first part, entitled Voiage fait du Canada par dedans les terres allant vers le Sud [Voyage of Canada's interior going south], Minet relates the descent of the Mississippi by Cavelier de La Salle and his companions during the years 1678 to 1682. The second part of his diary is entitled Journal de nostre voiage du golfe de Mexique [Journal of our voyage in the Gulf of Mexico]. It tells of La Salle's last expedition, from 1684 to 1687, in which he attempts to reach the Mississippi by way of the Gulf of Mexico. Minet recounts the events that took place up until his return to France in 1685. Imprisoned for more than a month as a deserter, Minet ended his diary with a series of accusations directed against the explorer.

The Voyage of Minet
Voyages in North America by the engineer and cartographer Minet, written in 1684-1685