Conlee, Emma C. (September 1953). "The Baxter Family". Washington Highway News. Vol. 3, no. 3. p. 21. OCLC29654162. Retrieved September 14, 2018 – via WSDOT Library Digital Collections.
State of Washington Highway Map (Map). Washington State Department of Highways. April 1, 1933. Retrieved September 16, 2018 – via Washington State Archives.
Conlee, Emma C. (September 1953). "The Baxter Family". Washington Highway News. Vol. 3, no. 3. p. 21. OCLC29654162. Retrieved September 14, 2018 – via WSDOT Library Digital Collections.