Richard F. Steele, Arthur P. Rose: An Illustrated History of the Big Bend Country, Embracing Lincoln, Douglas, Adams and Franklin Counties. Western Historical Publishing Company, Spokane, Washington 1904, OCLC8990120, S.106–110 (archive.org [abgerufen am 2. Februar 2017]).
Washington State Department of Transportation: Washington State Highways, 2014–2015. [Karte]. Hrsg.: Washington State Department of Transportation. Olympia, Washington 2014, Planquadrat E8 (englisch, wa.gov [PDF; abgerufen am 13. Januar 2018]).
Richard F. Steele, Arthur P. Rose: An Illustrated History of the Big Bend Country, Embracing Lincoln, Douglas, Adams and Franklin Counties. Western Historical Publishing Company, Spokane, Washington 1904, OCLC8990120, S.106–110 (archive.org [abgerufen am 2. Februar 2017]).