Biblio
Tree-Ring Dates From Arizona H-I Flagstaff Area. Tucson: University of Arizona.
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“Tree Ring Chronology”. Nature. Nature.
. 1978. “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. 2). Proceedings Of The American Philosophical Society.
. 1922. 
“Tree Rings And Chronology”. University Of Arizona Bulletin VII (No. 4). University Of Arizona Bulletin.
. 1937. 
“Secret Of The Southwest Solved By Talkative Tree Rings ”. National Geographic Magazine. National Geographic Magazine.
. 1929. 
“Dating Our Prehistoric Ruins”. Natural History. Natural History.
. 1921. 
“Dating Pueblo Bonito And Other Ruins Of The Southwest”. National Geographic Society. National Geographic Society. National Geographic Society.
. 1935. Tree-Ring Dates From Arizona U-W Gila-Salt Rivers Area. Tucson: University of Arizona.
. 1971. 
Tree-Ring Dates From Arizona J Hopi Mesas Area. Tucson: University of Arizona.
. 1967. 