Letter from Arno B. Cammerer to Carl Hayden regarding the storage of dynamite in Shoski Canyon.

Letter from Arno B. Cammerer to Carl Hayden updating him in regards to the insurance claims by Roy James and M.J. Hanley.

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 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 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 Sanford Rowe and W. W. Bass to Carl Hayden requesting a re-examination on the proposed park boundaries as they are disadvantageous to current land owners surrounding the canyon.

Letter from T. E. Pollock to Carl Hayden expressing his dissatisfaction with the proposed boundaries in the national park bill.

Letter from Arno B. Cammerer to Carl Hayden informing him that Superintendent Tillotson will submit a report on the conditions of the road between Grand Canyon Village and Rowe's Well.

Letter from Arno B. Cammerer to Carl Hayden denying his request for funding to repair the road between Grand Canyon Village and Rowe's Well.