A detailed hydraulic analysis of Idle Hour Wash for the purpose of preparing a Letter of Map Revision.

The objectives of this report are to document the on-site and off-site hydrologic and hydraulic assessment of the site and its characteristics, quantifying existing conditions peak discharges, and define the limits of 100-year on-site floodplains.

The purpose of this study is to provide flood and erosion hazard information for Soldier Canyon Wash for use by the District in floodplain use permitting and and floodplain management.

This study identifies the drainage and flooding hazards within the watershed and develops alternatives to address those hazards. It is a comprehensive study that estimates flood and erosion potential, maps watercourses, identifies existing and potential problems and develops preliminary solutions and standards for sound floodplain and stormwater management.

Detailed map of Granite Gorge section of the Grand Canyon from the pamphlet titled, "Titan of Chasms: Grand Canyon of Arizona."

Amendments to the bill establishing the Grand Canyon a National Monument. Circa 1908.

Editoral attacking Senator Ralph Cameron for attempting to buy Bright Angel Trail.

Travel statistics for Grand Canyon National Park.

Rebuttal to the editoral published in the Coconino Sun attacking Ralph Cameron.

Letter from J. E. Gavin to Louis C. Cramton regarding the Bright Angel Trail controversy, including newspaper clipping.