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.

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    • Letter From Arno B. Cammerer, Acting Director National Park Service to Carl Hayden
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    Senator Carl T. Hayden Papers (1851-1979), National Park Service- grazing and highway construction in Grand Canyon Park. Also, correspondence Papago National Monument and other national parks in Arizona, 1922-1923. MSS 1. Greater Arizona Collection. ASU Library, Arizona State University, Tempe, AZ.

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