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- All Subjects: Cammerer, Arno Berthold, 1883-1941
- Member of: 100 Years of Grand: The Grand Canyon Centennial Project
Letter from the Acting Director of the National Park to Carl Hayden assuring him that Superintendent Crosby had removed the dynamite nearby Grand Canyon Village and placed it in a safe location on the South Rim.
Letter from Carl Hayden to Arno B. Cammerer on behalf of Jesse L. Boyce's complaint. Hayden states that Boyce believes Crosby's report to be inaccurate and an underestimation of the danger of the stored explosives.
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.
Letter from Arno B. Cammerer to Carl Hayden reiterating the safe nature of the dynamite storage.
Letter from Arno B. Cammerer to Carl Hayden informing him of the removal of the dynamite from Grand Canyon Village to a point near Rowe Well.
Letter from Arno B. Cammerer to Carl Hayden on the investigation by Superintendent Crosby regarding the TNT stored in the Grand Canyon.
Letter from Arno B. Cammerer to Carl Hayden regarding the storage of dynamite in Shoski Canyon. Written in red pencil at the top, "My dear Jesse, For your(?) further information, Jack."
Letter from Arno B. Cammerer to Carl Hayden regarding the storage of dynamite in Shoski Canyon.
Letter from Arno B. Cammerer to J. R. Eakin describing the procedure for purchasing Bright Angel Trail.
Black and white stereograph card of a man sitting on an outcropping and overlooking the canyon. Circa 1879.