There is an immense body of literature relating to the Navajo Indians, most of it produced by others than historians. I have found no satisfactory account of the expansion of the Navajo frontier outward, especially toward the lower San Juan River and Glen Canyon, from the Canyon de Chelly region. Works like those by Kluckhohn and Leighton (1958) and the popular book by Underhill (1956) are helpful on Navajo relations with the whites. Dale's (1949) book covers federal relations with Indians of the Southwest after 1848. Colton (1959) treats of campaigns against the Navajos during the Civil War. There is very little material on the Mormon-Navajo war, which almost coincides with the Navajo captivity at Bosque Redondo, beyond the work of Brooks ...