How to See It
A Story of the Petrified Forest
Tonto National Monument, Arizona: 11th Edition, Revised
Walnut Canyon National Monument
Second Annual Report of the Bureau of Ethnology to the Secretary of the Smithsonian Institution, 1880-81, Government Printing Office, Washington, 1883, pages 429-466
Fifteenth Annual Report of the Bureau of Ethnology to the Secretary of the Smithsonian Institution, 1893-94, Government Printing Office, Washington, 1897, pages 315-348