236 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I47 



1929. The secret of the Southwest solved by talkative tree rings. Nat. 



Geogr. Mag., Dec. 1929, pp. 736-770. 

 1932. Tree rings and their relation to solar variations and chronology. Ann. 

 Report Smithsonian Inst, for 1931, pp. 304-313. 



1935. Dating Pueblo Bonito and other ruins of the Southwest. Contributed 



Technical Papers, Pueblo Bonito Series No. 1. National Geographic 

 Society. 

 1939. Notes on beam dating by sap-heart contact Tree-ring Bull., vol. 6, 

 No. 1, pp. 3-8, July. 

 DuTTON, Bertha P. 



1938. Leyit Kin, a small house ruin. Chaco Canyon, New Mexico. Univ. 

 New Mexico Bull. 333. 

 pRANascAN Fathers, The. 



1912. A vocabulary of the Navaho language, 2 vols., St. Michaels, Ariz. 

 Gladwin, Harold S. 



1945. The Chaco Branch : Excavations at White Mound and in the Red 

 Mesa Valley. Medallion Papers No. 33. Gila Pueblo, Globe, Ariz. 

 Gregory, Herbert E. 



1916. The Navajo country: A geographic and hydrographic reconnaissance 

 of parts of Arizona, New Mexico, and Utah. U. S. Geol. Surv. 

 Water Supply Paper No. 380. 

 Hack, John T. 



1942a The changing physical environment of the Hopi Indians of Arizona. 

 Papers Peabody Mus. Amer. Archaeol. and Ethnol., Harvard Univ., 

 vol. 35, No. 1. Reports of the Awatovi Exped., No. 1. 

 1942& Prehistoric coal mining in the Jeddito Valley, Arizona. Papers 

 Peabody Mus. Amer. Archaeol. and Ethnol., Harvard Univ., vol. 

 35, No. 2. 

 Hammond, J. F. 



1850. A room among the ruins of Pueblo Bonito. In Simpson, 1850. 

 Hawley, Florence M. 



1938. The family tree of Chaco Canyon masonry. Amer. Antiq., vol. 3, 

 No. 3, pp. 247-255. 

 Henderson, Junius 



1913. See Hewett, Henderson, and Robbins. 

 Hewett, Edgar L. 



1905. Prehistoric irrigation in the Navajo Desert. Records of the Past, 

 vol. 4, pt. 11, pp. 323-329. 



1921. The Chaco Canyon and its ancient monuments. Art and Archaeol., 



vol. 11, Nos. 1-2, pp. 2-28. 



1922. The Chaco Canyon in 1921. Art and Archaeology, vol. 14, No. 3, 



pp. 115-136. 



1930. Ancient Life in the American Southwest. Indianapolis. 



1936. The Chaco Canyon and its monuments. Handbooks of archeological 



history. University of New Mexico and School of American Re- 

 search, Albuquerque. 

 Hewett, Edgar L. ; Henderson, Junius, and Robbins, Wilfred W. 



1913. The physiogrraphy of the Rio Grande Valley, New Mexico, in relation 

 to Pueblo culture. Bur. Amer. Ethnol. Bull. 54. 



