Particular care should be taken that every promise made to them [the Navajo and Mescalero Apache] should be observed to the letter. In this way I am confident that in a few years they would equal if not excel our peaceful and industrious Pueblos, and be a source of wealth to the Territory, instead of being as heretofore its dread and impoverishers.

Letter to General James Henry Carleton (May 17, 1864)