Andrews, G. H. (January 8, 1971). "A Legislative Study: Kenmore to Swamp Creek". Washington State Legislature Joint Committee on Highways. p. 2. Retrieved October 6, 2021 – via WSDOT Library Digital Collections.
Gilmore, Susan (August 24, 2003). "Some freeway plans never went anywhere". The Seattle Times. The Seattle Times Company. Archived from the original on September 30, 2012. Retrieved November 6, 2010.
Gilmore, Susan (August 24, 2003). "Some freeway plans never went anywhere". The Seattle Times. The Seattle Times Company. Archived from the original on September 30, 2012. Retrieved November 6, 2010.