Letter from Carl Hayden to H. F. Robinson with attached notes from W. W. Bass and C. H. Gensler. Hayden solitices advice concerning the Havasupai Tribe needs for grazing and access to natural resources.

Letter from Carl Hayden to C. H. Gensler informing him of a trip to the Grand Canyon to discuss the Havasupai Tribe grazing lands.

Letter from Carl Hayden to Stephen T. Mather regarding certain amendments to the national park bill. Rights regarding the Havasupai Tribe are mentioned.

Letter from Carl Hayden to L. L. Ferrall on the favorable conditions for creating a national park and the prospect of the United States entering WW I.

Letter from Carl Hayden to Arno B. Cammerer enclosing Ed Hamilton's request for the road between Grand Canyon Village and Rowe's Well to be updated.

Letter from Carl Hayden to Ed Hamilton informing him that Superintendent Tillotson will submit a report on the conditions of the road between Grand Canyon Village and Rowe's Well.

Letter from Carl Hayden to Ed Hamilton explaining that although there are currently no funds to improve the road between Grand Canyon Village and Rowe's Well, it will be taken into consideration when funding does become available.

Letter from Carl Hayden to A. E. Demaray enclosing Ed Hamilton's complaint regarding the road between Grand Canyon Village and Rowe's Well.

Letter from Carl Hayden to Ed Hamilton expressing regret that he cannot do more to secure funds for the road between Grand Canyon Village and Rowe's Well.

Letter from Carl Hayden to Horace M. Albright regarding the grazing rights of Bankhead and Henderson.