Black and white print of the Grand Canyon with a typescript annotation, "July 17, 1914. Grand Canyon Arizona. On the left side you can see some of the mules taking people down the Bright Angel Trail to the bottom of the Canyon."

Handwritten cover titled, "Nature Notes of Grand Canyon, Polyphemus Moth, Female, Found at Grand Canyon, 5 July 1928, Vol. 3 - No. 2." Cover includes a drawing of the moth.

Typescript report, black and white, describing the birds of Grand Canyon National Park with cover drawing of a bald eagle.

Press release on the increase in wildlife in the Grand Canyon including mountain sheep, deer, and the Abert Squirrel.

Black and white, silver gelatin print with some silvering. Circa 1930.

Black and white, silver gelatin print with some silvering. Circa 1930.

Black and white, silver gelatin print with some silvering. Circa 1930.