Letter from Franklin K. Lane to Carl T. Hayden expressing his support for bill S.390 in establishing the Grand Canyon as a National Park.

Letter from Franklin K. Lane expressing his support for bill S.390 in establishing the Grand Canyon as a National Park. Circa 1913-1920.

Letter from The Camp Fire Club of America urging Carl Hayden to introduce a bill that would grant National Park status to the Grand Canyon.

Letter from David Babbitt supporting the establishment of a post office in the Grand Canyon National Park.