Filtering by
- All Subjects: Hayden, Carl Trumbull, 1877-1972
- All Subjects: Water resources development -- Arizona
- All Subjects: Watershed management -- Colorado River (Colo.-Mexico)
- Creators: Hayden, Carl Trumbull, 1877-1972
- Creators: Finney, E. C.
Letter from E. C. Finney to Carl Hayden regarding the cost of the Bright Angel Trail and an improved road between the town of Maine and the Grand Canyon.
Four letters of correspondence about the purchase of Bright Angel Trail between A. E. Demaray, Acting Director of the Grand Canyon National Park; E. C. Finney, Department of the Interior First Assistant Secretary; Carl T. Hayden, Representative (AZ); and Stephen T. Mather, Director of the National Park Service.
The Colorado River Compact: extension of remarks of Hon. Carl Hayden of Arizona, 1/30/1923. Congressional.
S75: a bill to authorize the construction, operation and maintenance of the Lower Colorado River Basin Project, and for other purposes, January 6, 1965.
Carl Hayden to [Arizona congressional delegation?], May 10, 1963. Re: Explanation of draft bill to authorize Central Arizona Project.