Letter from A. F. Potter to Carl T. Hayden describing John H. Page's request to build a railway for the Canyon Copper Company as "impractical."

Letter from Stephen T. Mather to Carl Hayden with markup of bill S 390 for the proposed National Park.

Letter from Carl Hayden to George W. P. Hunt outlining the proposed national park boundaries and the cost of a township if the state of Arizona decided to acquire one on the rim of the Grand Canyon.

Letter from Carl Hayden to L. B. Williams concerning the proposed township in the Grand Canyon.

Letter from W. W. Bass to Carl Hayden regarding the right to his property.

Letter from Carl Hayden to W. W. Bass on the recent amendments made to the national park bill.

Letter from T. E. Pollock to Carl Hayden expressing his dissatisfaction with the proposed boundaries in the national park bill.

Letter from T. E. Pollock to Carl Hayden asking his opinion on the proposed boundary lines.

Letter from W. W. Bass to Carl Hayden requesting a meeting at his camp to discuss the proposed park boundaries when he is attending the Arizona Good Roads Association conference.

Letter from Carl Hayden to W. W. Bass informing Bass that he will not be able to go north to attend the Arizona Good Roads Association conference; however, he assures Bass that his rights as a land owner and miner will be protected.