Letter from L. S. Williams to Carl Hayden suggesting a boundary amendment to the national park bill.

Letter from L. S. Williams to Carl Hayden stating there should be no objection to Saginaw and Manistee Lumber Company having their timber contract extended as it is greatly favored.

Letter from L. S. Williams to Carl Hayden about visiting Mr. Buggeln to discuss proposed park boundary changes.

Describes a number of streams within watershed planning units and prioritizing these streams according to their existing contribution to the overall conservation of biological diversity in Pima County. Over 50 percent of the priority streams within the County are found within the Altar Valley and the Cienega Rincon area.