On July 16, 1855, eighteen leaders of the Flathead, Kootenai, and Upper Pend d'Oreilles Indians signed an agreement with the United States government, ceding their title to almost all the land in western Montana and establishing the Flathead Indian Reservation. Born of confusion and disagreement, the Hell Gate Treaty is the legal basis for the modern relationship between the tribes and the federal government. "In the Name of the Salish & Kootenai Nation" reproduces the complete text of the Hell Gate Treaty and collects previously published documents relating to the treaty, among them the official proceedings of the treaty council, Gustavus Sohon's portraits of many of the treaty signers, and letters from the Jesuit priest, Adrian Hoecken, who was present at the treaty deliberations. These documents are presented in the hope that they will inspire further questions and research.