The Anthropological Papers of the University of Arizona is a peer-reviewed monograph series sponsored by the School of Anthropology. Established in 1959, the series publishes archaeological and ethnographic papers that use contemporary method and theory to investigate problems of anthropological importance in the southwestern United States, Mexico, and related areas.

The research reported here was conducted under the auspices of the Laboratory of Tree-Ring Research, The University of Arizona, Tucson, and presents findings based on intensive dendrochronological analyses of individual archaeological sites. Fieldwork, supported by the National Park Service and the Arizona State Museum, took place on lands belonging to Navajo National Monument and on the Navajo Indian Reservation.

During the late 1920s and early 1930s, archaeologists Earl and Ann Axtell Morris discovered an abundance of sandals from the Basketmaker II and III through Pueblo III periods while excavating rockshelters in northeastern Arizona. These densely twined sandals made of yucca yarn were intricately crafted and elaborately decorated, and Earl Morris spent the next 25 years overseeing their analysis, description, and illustration. This is the first full published report on this unusual find, which remains one of the largest collections of sandals in Southwestern archaeology. This monograph offers an integrated archaeological and technical study of the footwear, providing for the first time a full-scale analysis of the complicated weave structures they represent. Following an account by anthropologist Elizabeth Ann Morris of her parents' research, textile authority Ann Cordy Deegan gives an overview of prehistoric Puebloan sandal types and of twined sandal construction techniques, revealing the subtleties distinguishing Basketmaker sandals of different time periods. Anthropologist Kelley Ann Hays-Gilpin then discusses the decoration of twined sandals and speculates on the purpose of such embellishment.