FOREWORD 



The present volume is the fifth of those recording the more tech- 

 nical results of the National Geographic Society's researches in Chaco 

 Canyon, northwestern New Mexico. Earlier numbers are: 



1. Dating Pueblo Bonito and other ruins of the Southwest, by A. E. Douglass. 

 National Geographic Society Contr. Techn. Pap., Pueblo Bonito Ser., No. 1, 

 1935. 



2. The geology of Chaco Canyon, New Mexico, in relation to the life and 

 remains of the prehistoric peoples of Pueblo Bonito, by Kirk Bryan. Smithsonian 

 Misc. Coll., vol. 122, No. 7, 1954. 



3. The material culture of Pueblo Bonito, by Neil M. Judd, with Appendix: 

 Canid remains from Pueblo Bonito and Pueblo del Arroyo, by Glover M. Allen. 

 Smithsonian Misc. Coll., Vol, 124, 1954. 



4. Pueblo del Arroyo, Chaco Canyon, New Mexico, by Neil M. Judd. Smith- 

 sonian Misc. Coll., vol. 138, No. 1, 1959. 



A quarter century spans the publication period of these four 

 titles, but they did not stand alone. Annual progress reports ap- 

 peared in "Explorations and Field-work of the Smithsonian Insti- 

 tution," 1921-1928; fuller statements were offered from time to time 

 in divers scientific journals by Bryan, Douglass, and the present 

 writer ; and five popular articles appeared in the National Geographic 

 Magazine, as follows : 



1. A new National Geographic Society expedition. Anonymous, June 1921, 

 pp. 637-643. 



2. The Pueblo Bonito Expedition of the National Geographic Society, by Neil 

 M. Judd, March 1922, pp. 322-331. 



3. Pueblo Bonito, the Ancient, by Neil M. Judd, July 1923, p. 99-108. 



4. Everyday life in Pueblo Bonito, by Neil M. Judd, September 1925, pp. 227- 

 262. 



5. The secret of the Southwest solved by talkative tree-rings, by A. E. 

 Douglass, December 1929, pp. 11(^-11^. 



Not all our data have been presented. At his request, I granted 

 Dr. Frank H. H. Roberts, Jr., permission to include in his 1927 doc- 

 toral dissertation at Harvard University the pottery data he had 

 assembled while in the employ of the Pueblo Bonito Expeditions 

 but with the proviso, in keeping with my commitment to the National 

 Geographic Society, that those data would not be made public until a 



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