"Projects: South Corridor". Regional Transportation Investment District. June 28, 2007. Archived from the original on August 8, 2007. Retrieved April 29, 2018.
"Alternatives"(PDF). Regional Transit System Plan: Final Environmental Impact Statement (Report). Regional Transit Project. March 1993. p. 34. OCLC27723634. Archived from the original(PDF) on October 1, 2015. Retrieved April 29, 2018 – via Sound Transit.
"Train Depot Work on Fast Track"(PDF). Sumner Community Connection. City of Sumner. July 2000. p. 1. Archived from the original(PDF) on November 25, 2011. Retrieved April 29, 2018.
"Sounder Train Rolls In To Sumner"(PDF). Sumner Community Connection. City of Sumner. October 2000. p. 1. Archived from the original(PDF) on November 25, 2011. Retrieved April 29, 2018.
"Alternatives"(PDF). Regional Transit System Plan: Final Environmental Impact Statement (Report). Regional Transit Project. March 1993. p. 34. OCLC27723634. Archived from the original(PDF) on October 1, 2015. Retrieved April 29, 2018 – via Sound Transit.
"Train Depot Work on Fast Track"(PDF). Sumner Community Connection. City of Sumner. July 2000. p. 1. Archived from the original(PDF) on November 25, 2011. Retrieved April 29, 2018.
"Sounder Train Rolls In To Sumner"(PDF). Sumner Community Connection. City of Sumner. October 2000. p. 1. Archived from the original(PDF) on November 25, 2011. Retrieved April 29, 2018.
"Projects: South Corridor". Regional Transportation Investment District. June 28, 2007. Archived from the original on August 8, 2007. Retrieved April 29, 2018.
"Alternatives"(PDF). Regional Transit System Plan: Final Environmental Impact Statement (Report). Regional Transit Project. March 1993. p. 34. OCLC27723634. Archived from the original(PDF) on October 1, 2015. Retrieved April 29, 2018 – via Sound Transit.