Sanpoil River (English Wikipedia)

Hanson, M. A.; Clague, J. J. (2016). "Record of glacial lake Missoula floods in glacial lake Columbia, Washington". Quaternary Science Reviews. 133: 62–76. Bibcode:2016QSRv..133...62H. doi:10.1016/j.quascirev.2015.12.009.
Carim, K. J.; Caleb Dysthe, J.; McLellan, H.; Young, M. K.; McKelvey, K. S.; Schwartz, M. K. (2019). "Using environmental DNA sampling to monitor the invasion of nonnative Esox lucius (northern pike) in the Columbia River basin, USA". Environmental DNA. 1 (3): 215–226. doi:10.1002/edn3.22.
"Hot Air Line". Boundary Creek Times. Greenwood, British Columbia. June 27, 1902. doi:10.14288/1.0170881. Retrieved August 31, 2020.

harvard.edu

Hanson, M. A.; Clague, J. J. (2016). "Record of glacial lake Missoula floods in glacial lake Columbia, Washington". Quaternary Science Reviews. 133: 62–76. Bibcode:2016QSRv..133...62H. doi:10.1016/j.quascirev.2015.12.009.

"PHOTOS: Roads washout and house tumbles into river in Ferry County". KHQ Spokane. Spokane, Washington. April 13, 2017. Retrieved December 6, 2020.

Grace Ditzler (April 14, 2017). "WSDOT building temporary bridge on SR 21 near Republic". KLXY Spokane, Coeur d'Alene. Spokane, Washington. Retrieved December 6, 2020.

Chance, D. H. "Archaeological survey of Coulee Dam National Recreation Area; Part 2: Spring Draw-Down of 1967" (PDF). Washington State University Laboratory of Anthropology Report of Investigations No.42.

Justus Caudell (October 29, 2020). "CTFW reports 'naive adult' Chinook salmon have spawned in San Poil River". Tribal Tribune. Nespelem, Washington. Retrieved December 7, 2020.

"Hot Air Line". Boundary Creek Times. Greenwood, British Columbia. June 27, 1902. doi:10.14288/1.0170881. Retrieved August 31, 2020.

"SR 21 – West Fork Sanpoil Bridge Replacement". Washington State Department of Transportation. Retrieved December 6, 2020.

United States Office Of Indian Affairs (1902). Annual Report of the Commissioner of Indian Affairs, for the Year 1902 (PDF). Washington [D.C.]: Government Printing Office. p. 103. Republic and Kettle River Railway.