Filtering by
- All Subjects: Grand Canyon National Park (Ariz.)
- All Subjects: Hayden, Carl Trumbull, 1877-1972
- Creators: Gavin, J. E.
- Creators: Burke, Charles H.
- Creators: Gaines, John W.
- Creators: Mexico, Ministries of Forign Relations and Agriculture
Letter from J. E. Gavin to Louis C. Cramton regarding the Bright Angel Trail controversy, including newspaper clipping.
Letter from J. E. Gavin to Jesse L. Boyce regarding the TNT storage in the Grand Canyon. Gavin states that although acting director Arno B. Cammerer is confident in Superintendent Crosby's report concerning the legitimacy of the storage, he will continue to investigate the matter to ensure public safety.
Letter from J. E. Gavin on behalf of Carl Hayden writing in regards to the insurance claims filed with the National Park.
Letter from The Camp Fire Club of America urging Carl Hayden to introduce a bill that would grant National Park status to the Grand Canyon.
Letter from Charles H. Burke to Carl T. Hayden about mining on Diné (formerly Navajo) national land.