"Chapter 3: Corridors"(PDF). Transit Master Plan: Final Summary Report (Report). Seattle Department of Transportation. February 1, 2016. pp. 3–25. Retrieved April 13, 2016.
"Chapter 4: Service"(PDF). Transit Master Plan: Final Summary Report (Report). Seattle Department of Transportation. February 1, 2016. pp. 4–19. Retrieved April 3, 2016.
DeArmond, Richard C. (May 1983). "The Trolleybus System of Seattle". Trolleybus Magazine. No. 129. UK: National Trolleybus Association. pp. 51–72. ISSN0266-7452.
Bramley, Rod (November–December 2021). "Not So Sleepless in Seattle, Part 3: The 1980s". Trolleybus Magazine. No. 360. UK: National Trolleybus Association. pp. 212–225. ISSN0266-7452.
Bramley, Rod (January–February 2024). "Not So Sleepless in Seattle, Part 7: The 2020s". Trolleybus Magazine. No. 373. UK: National Trolleybus Association. pp. 4–16. ISSN0266-7452.
"Trolleynews [regular news section]". Trolleybus Magazine. Vol. 53, no. 333. UK: National Trolleybus Association. May–June 2017. p. 117. ISSN0266-7452.
"Trolleynews [regular news section]". Trolleybus Magazine. Vol. 58, no. 365. UK: National Trolleybus Association. September–October 2022. p. 217. ISSN0266-7452.
"Trolleynews [regular news section]". Trolleybus Magazine. Vol. 55, no. 348. UK: National Trolleybus Association. November–December 2019. p. 235. ISSN0266-7452.
"Trolleynews [regular news section]". Trolleybus Magazine. Vol. 55, no. 345. UK: National Trolleybus Association. May–June 2019. p. 117. ISSN0266-7452.
Bramley, Rod (March–April 2021). "Not So Sleepless in Seattle, Part 1: Introduction". Trolleybus Magazine. No. 356. UK: National Trolleybus Association. pp. 50–61. ISSN0266-7452.
Demoro, Harry W. (1971). Seattle Trolley Coaches. South Gate, California: Interurbans. OCLC6219478.
"Trolleynews [regular news section]". Trolleybus Magazine. Vol. 41, no. 261. UK: National Trolleybus Association. May–June 2005. p. 72. ISSN0266-7452.
"Trolleynews [regular news section]". Trolleybus Magazine. Vol. 53, no. 332. UK: National Trolleybus Association. March–April 2017. p. 78. ISSN0266-7452.
Murray, Alan (January–February 2025). "American Trolleybus Bonus". Trolleybus Magazine. No. 373. UK: National Trolleybus Association. pp. 25–26. ISSN0266-7452.
Isgar, Carl F. (March–April 2020). "Preservation Update". Trolleybus Magazine. Vol. 56, no. 350. UK: National Trolleybus Association. p. 65. ISSN0266-7452. OCLC62554332.
worldcat.org
Trolleybus Magazine No. 303 (May–June 2012), p. 75. National Trolleybus Association (UK). ISSN0266-7452
Trolleybus Magazine No. 142 (July–August 1985), pp. 93–94. National Trolleybus Association (UK). ISSN0266-7452
Trolleybus Magazine No. 276 (November–December 2007), p. 143. National Trolleybus Association (UK). ISSN0266-7452
Trolleybus Magazine No. 311 (September–October 2013), pp. 136–138. National Trolleybus Association (UK). ISSN0266-7452