Tolong jelaskan mengenai Rujukan dari John Wesley Powell dalam bahasa melayu

Biographical sketch (1903) by Frederick S. Dellenbaugh

NPS John Wesley Powell Photograph Index

John Wesley Powell Student Research Conference at Illinois Wesleyan University

John Wesley Powell Collection of Pueblo Pottery at Illinois Wesleyan University Ames Library

John Wesley Powell River History Museum, Green River, Utah

"John Wesley Powell"  by James M. Aton in the Western Writers Series Digital Editions at Boise State University

"A Canyon Voyage, The Narrative of the Second Powell Expedition down the Green-Colorado River from Wyoming, and the Explorations on Land, in the Years 1871 and 1872" (1908) by Frederick Samuel Dellenbaugh at Project Guteberg

Powell, J. W., In Fowler, D. D., & In Fowler, C. S. (1971). Anthropology of the Numa: John Wesley Powell's manuscripts on the Numic peoples of Western North America, 1868-1880. Washington: Smithsonian Institution Press; for sale by the Supt. of Docs., U.S. Govt. Print. Off..

Fowler, D. D., Matley, J. F., & National Museum of Natural History (U.S.). (1979). Material culture of the Numa: The John Wesley Powell Collection, 1867-1880. Washington: Smithsonian Institution Press.

John Wesley Powell artifact collections in the Department of Anthropology, National Museum of Natural History, Smithsonian Institution.