"Section 49: Washington". 1970 Census of Population, Volume I: Characteristics of the Population, Part A: Number of Inhabitants (Missouri–Wyoming, Puerto Rico, and Outlying Areas). United States Census Bureau. May 1972. p. 13. OCLC22130822. Retrieved March 10, 2018 – via Google Books.
Washington State Redistricting Commission (July 15, 2022). "Legislative District 32"(PDF) (Map). District Maps Booklet 2022. Washington State Legislative Information Center. p. 33. Retrieved January 15, 2024.
Cameron, David A.; LeWarne, Charles P.; May, M. Allan; O'Donnell, Jack C.; O'Donnell, Lawrence E. (2005). Snohomish County: An Illustrated History. Index, Washington: Kelcema Books LLC. p. 308. ISBN978-0-9766700-0-1. OCLC62728798.
Raisz, Erwin (1989). Scott, James William (ed.). Washington, a Centennial Atlas (Map). Bellingham, Washington: Center for Pacific Northwest Studies, Western Washington University. p. 4. ISBN0929008243. OCLC213083452.
"Section 49: Washington". 1970 Census of Population, Volume I: Characteristics of the Population, Part A: Number of Inhabitants (Missouri–Wyoming, Puerto Rico, and Outlying Areas). United States Census Bureau. May 1972. p. 13. OCLC22130822. Retrieved March 10, 2018 – via Google Books.