Filtering by
- All Subjects: Irrigation -- Colorado River (Colo.-Mexico)
- All Subjects: maps
- All Subjects: Arizona -- Politics and government -- To 1950
- Creators: Archives and Special Collections, Arizona State University Libraries
- Creators: Hayden, Carl T.
Letter from Carl Hayden to W. W. Bass asking his opinion on the proposed boundaries of the National Park. GC Natl Park written on the letter in blue pencil.
Letter from Carl Hayden to W. W. Bass asking his opinion on the proposed boundaries of the National Park. GC National Park written on the letter in red pencil.
Letter from Carl Hayden to Hugh E. Campbell with an enclosed outline map of the proposed boundaries of Grand Canyon National Park.
Colorado River Conservation Resolution, Los Angeles Chamber of Commerce, 1920.
Official report of proceedings before the Department of the Interior in the matter of Secretary's Conference re: Mexican water Treaty, January 24, 1962.
Carl T. Hayden to the Hon. Secretary of the Interior, January 11, 1962 re: Mexican Water Allocations.
Carl T. Hayden to Dean Rusk, December 20, 1961 re: Mexican Water Allocations.