Biblio
. Anon.1978. Tree Ring Chronology. Nature. Nature.
. Anon.1975. Tree-Ring Dates from Arizona H-I Flagstaff Area. Tucson: University of Arizona.
. Anon.1971. Tree-Ring Dates from Arizona U-W Gila-Salt Rivers Area. Tucson: University of Arizona.
. Anon.1967. Tree-Ring Dates from Arizona J Hopi Mesas Area. Tucson: University of Arizona.
. Anon.1937. Tree Rings and Chronology. University of Arizona Bulletin VII, no. No. 4. University of Arizona Bulletin.
. Anon.1935. Dating Pueblo Bonito and Other Ruins of the Southwest. National Geographic Society. National Geographic Society. National Geographic Society.
. Anon.1929. Secret of the Southwest Solved by Talkative Tree Rings . National Geographic Magazine. National Geographic Magazine.
. Anon.1922. Some Topographic and Climatic Characters in the Annual Ring of the Yellow Pines and Sequoias of the Southwest . Proceedings of the American Philosophical Society LXI, no. No. 2. Proceedings of the American Philosophical Society.
. Anon.1921. Dating Our Prehistoric Ruins. Natural History. Natural History.
]