Jesse Walter Fewkes 
Antiquities of the Upper Verde River and Walnut Creek Valleys, Arizona [PDF ebook] 

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. The following pages are more in the nature of a preliminary report than an exhaustive account of the antiquities of the valleys of the upper Verde River and Walnut Creek. This report deals with areas little known archeologically, although, by reason of their geographic positions, presenting to the student of the prehistoric culture of Arizona most interesting problems. The aim is to consider types rather than to enumerate many examples of the same kind of ruins. The present discussion is confined for the greater part, though not entirely, to architectural features.