Filtering by
- All Subjects: Grand Canyon National Park (Ariz.)
- All Subjects: Proske, Hal
- All Subjects: Angkor (Extinct city)
Cordell Hull to Carl T. Hayden, November 13, 1943 re: Mexican water treaty.
John R. Murdock to Carl T. Hayden, February 21, 1944 re: Mexican water treaty.
Sidney P. Osborn to Franklin D. Roosevelt, March 16, 1944 re: Mexican water treaty.
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.
Detailed map of Granite Gorge section of the Grand Canyon from the pamphlet titled, "Titan of Chasms: Grand Canyon of Arizona."
Amendments to the bill establishing the Grand Canyon a National Monument. Circa 1908.