Letter from W. W. Bass to Carl Hayden on the proposed park boundaries which he deems 'outrageous' and the effect such a bill could have on Hayden's reelection chances.

Letter from W. W. Bass to Carl Hayden written on Bass Camps and Trails stationary. Bass urges Hayden to consider the implications to his farming and mining rights if the bill is passed.

Letter from Sanford Rowe and W. W. Bass to Carl Hayden requesting a re-examination on the proposed park boundaries as they are disadvantageous to current land owners surrounding the canyon.

Letter from W. W. Bass to Carl Hayden requesting the boundaries of the park be reconsidered as a large portion of the land is suitable for mining and farming.

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

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 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 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 opposing the Grand Canyon National Park bill in its current form.

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.