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 Jesse L. Boyce to Carl Hayden stating that the Director of the National Park Service will order Colonel Crosby to remove the dynamite from the park.

Letter from L. J. O'Reilly to Carl Hayden on behalf of William Randolph Hearst regarding his land ownership within the proposed Grand Canyon boundaries.