This report is one of several from Statistical Research Inc. written to develop the Cultural and Historic Resources Element of the Sonoran Desert Conservation Plan. Divided into four parts, the report summarizes available information that reflects the experience of (1) ancient peoples of Southern Arizona; (2) indigenous peoples; (3) non-indigenous peoples of the historical period; and (4) Pima County today.

The purpose of the U.S. Highway 93 Corridor Area Plan is to recognize the unique character of the highway corridor and to encourage land use patterns that are consistent with the goals of the Mohave County General Plan, the residents and the property owners. The U.S. Highway 93 Corridor Area Plan, a component of the General Plan, covers approximately 430 square miles of unincorporated land in Mohave County.