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- All Subjects: Butterfly
- All Subjects: Hayden, Carl Trumbull, 1877-1972
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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 Stephen T. Mather to Carl Hayden with markup of bill S 390 for the proposed National Park.
Letter from John H. Page to Carl T. Hayden regarding his company's rights to build a railway if they choose to.
Letter to Carl T. Hayden regarding a water-power bill in effect for the Grand Canyon.
Letter from Henry Graves to Carl T. Hayden regarding the land ownership and grazing rights of the Havasupai.
Letter from John Page to Carl T. Hayden regarding a conversation conducted at Hotel Adams in Phoenix. Page states his concern over the national park bill in reference to his mining company.
Letter from Bernie Zachau to Carl Hayden regarding water power in the Grand Canyon.
Letter from Carl Hayden to Joseph J. Cotter regarding suggestions on the proposed national park bill.
Letter from Joseph J. Cotter to Carl Hayden regarding the use of water power and summer homes in the proposed park boundaries.
Letter from Carl Hayden to Bernie Zachau regarding the national park bill with an enclosed copy of the National Park Service Act.