Letter from W. W. Bass to Harry Welch protesting the proposed national park bill.

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

Letter from W. W. Bass to Carl Hayden arguing for a delay in the national park bill proceedings.

Letter to W. W. Bass from Carl Hayden's secretary informing him of a vote on the national park bill will not be held until December.

Letter from W. W. Bass to Carl Hayden opposing the Grand Canyon National Park bill in its current form.

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 W. W. Bass to Carl Hayden stating his vehement opposition to the National Park bill. Bass's concerns include a monopoly by the Santa Fe Railway and a clash between the Native Americans and the Department of the Interior.

Letter from W. W. Bass to Carl Hayden concerning the mining of asbestos in the Grand Canyon.

Letter from W. W. Bass to Carl Hayden lamenting the new regulations placed on his business.