Press release comparing visitor attendance to the park by year. A 26 percent increase from 1923 to 1924 is noted.

Travel statistics for Grand Canyon National Park.

This report examines how effectively Pima County’s natural open-space acquisitions have addressed priorities for conserving species’ habitats and landscape features identified in the Sonoran Desert Conservation Plan. The scope of this study is beyond the County's Multi-Species Conservation Plan, which is a subset of the overall Sonoran Desert Conservation Plan.

The purpose of this study is to provide the U.S. Fish & Wildlife Service with an analysis that identifies anticipated impacts to each of the covered species and asks the question: How effectively will the County's mitigation lands include the specific habitats of covered species under the Multi-Species Conservation Plan?

Develops the methods for using the National Land Cover Dataset to report change by jurisdictions and land ownership by utilizing an existing dataset. Local GIS-based measures of development based on tax assessor records do not provide direct measures of habitat loss.

Letter from J. R. Eakin to Carl Hayden regarding the sale of Bass properties to the Santa Fe Railroad Company.

Letter from J. R. Eakin to Carl Hayden justifying the value of his land at twenty-five thousand dollars.

Letter from J. R. Eakin to Stephen T. Mather about expenses and reconstruction of the Kaibab Trail.

Letter from J. R. Eakin to Arthur C. Ringland about the alignment of 40 acres near the Buggeln ranch.