Joliet made several maps, showing his discoveries, only one of which has been edited. Gravier’s “Étude sur une carte inconnue, la première dressée par L. Joliet en 1674,” contains a fac-simile of the map in question. A letter from the discoverer to Frontenac is inscribed upon it. Gravier considers this map, apparently with good reason, to be the earliest representation of the course of the Mississippi from personal knowledge. Frontenac’s letter announcing the successful result of Joliet’s mission is printed in Margry, vol. i., p. 257, and a translation is inserted in the “New York Colonial Documents,” vol. ix., p. 116. See the following for notices of Joliet: Faillon’s “Histoire de la Colonie française en Canada,” vol. iii.; Ferland’s “Notes sur les régistres de Notre-Dame;” Margry’s articles in the _Revue Canadienne_, December, 1871, January, March, 1872. French’s Historical Collections, second series, has a brief biography. The works hereafter cited upon the history of the discovery of the Mississippi necessarily include a history of the Marquette-Joliet expedition. We now come to La Salle, Hennepin, and Tonty, 1669–87. Margry’s “Découvertes et établissements des Français dans l’Ouest et dans le sud de l’Amérique septentrionale, 1614–1698,” Paris, 1879–81, contains the documents which the editor collected in the archives of France. This work now comprises four large octavo volumes, three of which are mainly devoted to documents upon La Salle’s explorations. The contents of these three volumes are arranged under the following heads: 1re partie, “Voyages des Français sur les grands lacs et Découverte de l’Ohio et du Mississipi (1614–1684);” 2me partie, “Lettres de La Salle;” 3me partie, “Recherche des bouches du Mississipi (1669–1698).” The more important of these papers are indicated hereafter in their chronological order. The fourth volume of this collection embraces the documents relating to D’Iberville’s colony, at the mouth of the Mississippi, 1698–1703. In 1669 La Salle, accompanied by Dollier and Gallinée, set out from Montreal to discover the Mississippi. They proceeded in company to the western extremity of Lake Ontario. At this place La Salle, professing illness, parted from the missionaries, ostensibly to return to Montreal. Dollier and Gallinée continued their journey along the northern shores of Lake Erie, thus taking a course hitherto untravelled, and reached Sault Ste. Marie in May, 1670, having spent the winter on the shores of Lake Erie. Gallinée’s journal, entitled “Récit de ce qui s’est passé de plus rémarquable dans le voyage de MM. Dollier et Gallinée,” is printed in Margry, vol. i., pp. 112–166. The Abbé Faillon, who first discovered the records of this journey, gives a synopsis of Gallinée’s recital, with a fac-simile of his map, in the third volume of his “Histoire de la Colonie française en Canada.”