Letter from W. W. Bass to Carl Hayden concerning the mining of asbestos in the Grand Canyon.
Letter from The Camp Fire Club of America urging Carl Hayden to introduce a bill that would grant National Park status to the Grand Canyon.
Letter from Carl Hayden to Governor George W. P. Hunt asking the governor to submit the idea of a national park near the rim of the Grand Canyon to the state legislature during the special session. Hayden mentions the state of Arizona would be charged about $28,800 for the land at $1.25 an acre. W. W. Bass and Bass Camp are also included in the letter.
Letter from Governor George W. P. Hunt to Carl Hayden expressing his support for legislation that would grant National Park status to the Grand Canyon.
Letter from Carl Hayden to C. H. Akers on the opposition to the Grand Canyon bill from A. A. Johns, J. W. Sullivan, Jesse Hoyce, T. E. Cureton, and Hugh Campbell. Hayden mentions his failure to contact the governor before the present special session, but expresses hope of the legislature passing a memorial on the subject.
Letter from Charles H. Akers to Carl Hayden expressing his support for the National Park bill.
Letter from Ralph H. Cameron to Carl Hayden thanking him for forwarding Senate Bill No. 390 with the report of March 31st, 1918, and expressing interest in their upcoming meeting in Washington.
Letter from Ralph H. Cameron to Carl Hayden requesting a delay on the introduction of the Grand Canyon bill until he can meet with himself and Senator Ashurst in Washington.
Letter from Carl Hayden to Ralph H. Cameron responding favorably to a request to meet in regards to the bill granting National Park status to the Grand Canyon.
Letter from Stephen T. Mather to Carl T. Hayden thanking Hayden for his advice about visiting Arizona.