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- All Subjects: Dynamite
- All Subjects: Campbell, Gilbert Alan, 1906-1985
- All Subjects: Hopi Tribe of Arizona
- All Subjects: Havasupai Point
- Member of: 100 Years of Grand: The Grand Canyon Centennial Project
Letter from Ed Hamilton to Carl Hayden regarding the storage of dynamite in Shoski Canyon.
Letter from A. E. Demaray to Carl Hayden regarding the storage of dynamite in Shoski Canyon.
Letter from Arno B. Cammerer to Carl Hayden regarding the storage of dynamite in Shoski Canyon.
Letter from Fred Harvey to Senator Carl Hayden on the diary of Padre Francisco Garcés and his entry on July 4, 1776.
Letter from Fred Harvey to Senator Carl Hayden on the diary of Padre Francisco Garcés and the lack of knowledge of U.S. citizens regarding the Hopi people.
Letter from Jesse L. Boyce to Carl Hayden stating there is 30 tons of dynamite located in the Grand Canyon near tourist sites.
Letter from Arno B. Cammerer to Carl Hayden reiterating the safe nature of the dynamite storage.
Letter from unknown author (possibly Jack) to Jesse L. Boyce regarding his complaint concerning the TNT located in the Grand Canyon. Enclosed is Superintendent Crosby's report in which he states that the current housing location of the TNT is not a threat to anyone.
Letter from W. W. Crosby to the Director of the National Park Service defending his placement of the dynamite near Grand Canyon Village. He states there is between 16-20 tons of dynamite.
Letter from Arno B. Cammerer to Carl Hayden supporting Superintendent Crosby's stance that there is no need to remove the dynamite stored near Grand Canyon Village.