1. The Interpretation of Archaeological Tree-ring Dates;Ahlstrom,1985
2. The Long Walk: a History of the Navajo Wars, 1846–1868;Bailey,1964
3. A History of the Navajos: the Reservation Years;Bailey,1986
4. The interpretation of tree-ring dates;Bannister;Am. Antiq.,1962
5. The Early Navajo Occupation of the Grand Canyon Region;Begay,1996