Critical analysis of similarities and differences in various tree-ring data obtained from the Tusayan Ruin in an attempt reach a consensus as to the date of the ruins in the region.
Gladwin compares the previous work done on the architecture of the Flagstaff culture by Colton, Spicer, McGregor and Hargrave with tree-ring dating done by Douglass and McGregor and concludes that the tree-rings dates are in direct conflict.
Critical analysis of similarities and differences in various tree-ring data obtained from the Medicine Valley in an attempt to reach a consensus as to the date of the ruins in the region.
Paper revising a prior Medallion paper concerning excavations of Snaketown and the presentation of new theories about the "Mogollon" culture based on new analysis and information.
Examination of the validity of the commonly accepted tree-ring drought theory as applied by archaeologists in establishing timelines for the various cultures in the Southwest.