As is well known, in his Nouvelle Relation de l'Afrique Occidentale of 1728 Père Jean-Baptiste Labat published material which led many later historians to suppose that the first exploration by Frenchmen of the furthest navigable point of the Senegal River, the Falls of Félou, was that conducted in 1698 by André Brue, chief agent of the Compagnie du Sénégal and governor of the post at St. Louis, following an abortive mission towards the falls despatched by Brue in 1697. However, in 1893 Henri Froidevaux published documents which showed that an earlier governor of St. Louis, Louis Moreau de Chambonneau, after a visit in 1686 to Galam, the “kingdom” containing the falls, sent two boats upriver in 1687 which reached the falls; and that after his return to France in July 1688, Chambonneau presented his superiors with a crude map of the falls. In 1913 Prosper Cultru published an account by a contemporary of Chambonneau, Michel Jajolet de la Courbe, a visitor to St. Louis in 1685–86. This account stated that Chambonneau had made an unsuccessful attempt to visit Galam in 1685, and that La Courbe himself, at a later date, (unstated but almost certainly 1690), during his second period in Africa, visited “the highest point in the river that can be reached.” Furthermore, La Courbe's account proved that Labat had misleadingly ascribed to Brue ca.1700 a whole series of journeys through Senegambia in fact undertaken by La Courbe ca.1685. Although the alleged achievements of Brue thus decisively invalidated do not include the 1698 visit to Galam, Brue's responsibility for the 1697 venture towards the falls is thrown into doubt; and other evidence cited by Cultru makes it less than certain that in 1698 Brue actually visited the Falls himself. In 1958 Abdoulaye Ly republished the Chambonneau manuscript map of the falls, and accepted that they had first been explored by the 1687 mission. Finally, in 1968 Carson Ritchie published two accounts by Chambonneau, written in 1677, during an earlier period of service at St. Louis, which, though not claiming that the author had yet visited Galam, stated that it had already been visited by other whites, presumably French colleagues. This indicated more gradual French exploration of the region leading up the falls than was once supposed, for even La Courbe, in a document of 1963 cited by Froidevaux, had spoken of Galam being “discovered only 7–8 years previously.”