Rand McNally (1944). Highways of the State of Washington (Map). Washington State Department of Highways. OCLC5673231. Retrieved August 17, 2018 – via David Rumsey Historical Map Collection.
Ammons, David (May 20, 2003). "5 cents more at gas pump". Yakima Herald-Republic. Associated Press. Archived from the original on August 18, 2018. Retrieved August 17, 2018.
Courtney, Ross A. (September 18, 2008). "SR 24 drivers find relief". Yakima Herald-Republic. Archived from the original on August 18, 2018. Retrieved August 17, 2018.
"President Vetoes Payment For Road". Port Angeles Evening News. Associated Press. September 3, 1957. p. 10. Retrieved August 17, 2018 – via Newspapers.com.
"Highway 11-A opens to Othello". Washington Highway News. Vol. 9, no. 7. Washington State Department of Highways. August 1961. p. 2. OCLC29654162. Retrieved August 17, 2018 – via Washington State Department of Transportation Library Digital Collections.
"New Highway For Central Washington". Washington Highway News. Vol. 9, no. 6. Washington State Department of Highways. June 1961. pp. 9–12. OCLC29654162. Retrieved August 17, 2018 – via Washington State Department of Transportation Library Digital Collections.
Othello Quadrangle, Washington (Map). 1:62,500. United States Geological Survey. 1924. Retrieved August 17, 2018 – via Perry–Castañeda Library Map Collection.
Walla Walla, Washington; Oregon (Map). 1:250,000. United States Geological Survey. 1953 [revised 1963]. Retrieved August 17, 2018 – via Perry–Castañeda Library Map Collection.
Washington State Department of Transportation (2014). Washington State Highways, 2014–2015(PDF) (Map). Olympia: Washington State Department of Transportation. Archived from the original(PDF) on February 21, 2017. Retrieved August 15, 2018.
Bridge and Structures Office (November 2017). "Bridge List (M 23-09.08)"(PDF). Washington State Department of Transportation. p. 169. Retrieved August 14, 2018.
"SR 24 – Junction: SR 26"(PDF). Washington State Department of Transportation. August 21, 2017. Retrieved August 14, 2018.
2016 Annual Traffic Report(PDF) (Report). Washington State Department of Transportation. 2017. p. 107. Archived from the original(PDF) on August 12, 2017. Retrieved August 15, 2018.
Prahl, C. G. (December 1, 1965). "Identification of State Highways"(PDF). Washington State Highway Commission. Archived from the original(PDF) on February 17, 2017. Retrieved August 17, 2018.
"Chapter 59: Secondary State Highway No. 11A"(PDF). Session Laws of the State of Washington, 1953. Washington State Legislature. March 3, 1953. pp. 86–87. Retrieved August 17, 2018.
"Chapter 145: Highways"(PDF). Session Laws of the State of Washington, 1967 extraordinary session. Washington State Legislature. May 11, 1967. p. 2306. Retrieved August 17, 2018.
"Chapter 51: State Highways—Route Numbers"(PDF). Session Laws of the State of Washington, 1970 1st extraordinary session. Washington State Legislature. February 24, 1970. p. 353. Retrieved August 17, 2018.
Washington State Department of Transportation (2014). Washington State Highways, 2014–2015(PDF) (Map). Olympia: Washington State Department of Transportation. Archived from the original(PDF) on February 21, 2017. Retrieved August 15, 2018.
2016 Annual Traffic Report(PDF) (Report). Washington State Department of Transportation. 2017. p. 107. Archived from the original(PDF) on August 12, 2017. Retrieved August 15, 2018.
Prahl, C. G. (December 1, 1965). "Identification of State Highways"(PDF). Washington State Highway Commission. Archived from the original(PDF) on February 17, 2017. Retrieved August 17, 2018.
Ammons, David (May 20, 2003). "5 cents more at gas pump". Yakima Herald-Republic. Associated Press. Archived from the original on August 18, 2018. Retrieved August 17, 2018.
Courtney, Ross A. (September 18, 2008). "SR 24 drivers find relief". Yakima Herald-Republic. Archived from the original on August 18, 2018. Retrieved August 17, 2018.
"Highway 11-A opens to Othello". Washington Highway News. Vol. 9, no. 7. Washington State Department of Highways. August 1961. p. 2. OCLC29654162. Retrieved August 17, 2018 – via Washington State Department of Transportation Library Digital Collections.
Rand McNally (1944). Highways of the State of Washington (Map). Washington State Department of Highways. OCLC5673231. Retrieved August 17, 2018 – via David Rumsey Historical Map Collection.
"New Highway For Central Washington". Washington Highway News. Vol. 9, no. 6. Washington State Department of Highways. June 1961. pp. 9–12. OCLC29654162. Retrieved August 17, 2018 – via Washington State Department of Transportation Library Digital Collections.