Letter from A. F. Potter to John H. Page referring his request to build a railway to the District Forester at Albuquerque, New Mexico.
Letter from A. F. Potter to Carl T. Hayden describing John H. Page's request to build a railway for the Canyon Copper Company as "impractical."
Letter from A. F. Potter to Carl Hayden regarding W. W. Bass's livery permit. Bass's fee to maintain the roads has been reduced to $50 per year, but he will still need to keep his business at least a hundred feet from the Grand Canyon rim so as not to disturb visitors.
Typescript report, black and white, describing the mammals of Grand Canyon National Park with cover drawing of a bighorn sheep.
Typescript report, black and white, describing the birds of Grand Canyon National Park with cover drawing of a bald eagle.
