San Francisco cable car system (English Wikipedia)

"Origin and Development of Cable Railways". The Street Railway Journal. XI (5): 311–318. May 1895. Retrieved December 8, 2021.
Charles Henry Phelps v. The Cable Railway Company (Supreme Court of the State of New York 1886), Text.

cable-car-guy.com

Of Cables and Grips: The Cable Cars of San Francisco (2nd ed.). Robert Callwell & Walter E. Rice, Ph.D. 2005. ISBN 978-0-9726162-2-5. Retrieved May 16, 2021 – via The Cable Car Home Page.
"When Stationary Steam Engines Powered the Cable". Walter Rice Ph.D. and Emiliano Echeverria, The Cable Car Home Page. Retrieved May 16, 2021.
"Cal Cable's Hyde & California Street Car Barn & Powerhouse". Cable Car Guy. March 1, 2004. Retrieved September 13, 2016.
"The Cable Car Home Page – Cable Car Bell Ringing Contest". Retrieved February 12, 2014.

"Anatomy of how cable cars operate". Cable Car Museum. Retrieved November 17, 2008.
"The Eight Original San Francisco Cable Car Companies". Cable Car Museum. Retrieved March 19, 2012.
"Clay Street Hill Railroad – 1873". Cable Car Museum. Retrieved December 7, 2021.
"The Sutter Street Railroad – 1877". Cable Car Museum. Retrieved December 7, 2021.
"The California Street Cable Railroad – 1878". Cable Car Museum. Retrieved December 7, 2021.
"The Geary Street Park & Ocean Railroad – 1880". Cable Car Museum. Retrieved December 7, 2021.
"The Presidio & Ferries Railroad – 1880". Cable Car Museum. Retrieved December 7, 2021.
"The Market Street Cable Railway – 1883". Cable Car Museum. Retrieved December 7, 2021.
"The Ferries & Cliff House Railway – 1888". Cable Car Museum. Retrieved December 7, 2021.
"The Omnibus Railroad & Cable Company – 1889". Cable Car Museum. Retrieved December 7, 2021.
"San Francisco Cable Car– the Gripping Tale of an Aged Compact". Tony Hogg, Road & Track, April 1962 (accessed on CableCarMuseum.org). Retrieved May 16, 2021.
"Cable Car Barn Gearbox Rebuild 2017–2019". www.cablecarmuseum.org. Retrieved December 6, 2021.
"Cable Cars: How they work - The Brakes". www.cablecarmuseum.org. Retrieved October 1, 2016.
"Powell Street Cable Car". Retrieved April 16, 2010.
"California Street Cable Car". Retrieved April 16, 2010.
"Cable Car Fleet Roster". Retrieved April 16, 2010.
"Cable Car Bell Ringing Contests". Retrieved August 11, 2011.

"Repairing San Francisco's old cable cars". Christian Science Monitor. Celia Herron, The Christian Science Monitor, April 9, 1981. April 9, 1981. Retrieved May 16, 2021.

US expired 160757, W. Eppelshemier, "Improvement in clamp apparatus for connecting street-cars", issued March 16, 1875

"Thumbs Up for LED Headlights on San Francisco's Historic Cable Cars". LEDtronics (Press release). July 25, 2018. Retrieved December 6, 2021.

"NHL Summary". Archived from the original on April 6, 2015. Retrieved July 24, 2008.

Swan, By Rachel (March 17, 2020). "San Francisco's cable cars shut down to protect operators from coronavirus". San Francisco Chronicle. Retrieved March 26, 2020.
Matier, Phillip; Ross, Andrew (April 23, 2017). "Muni looks at ending cash fares on cable cars". San Francisco Chronicle. Retrieved April 24, 2017.
Knight, Heather (December 14, 2018). "While decorating a cable car, I discovered the magic of San Francisco — again". San Francisco Chronicle. Retrieved January 4, 2019.

Kamiya, Gary (February 8, 2014). "How S.F.'s cable cars were saved after an uphill battle". SFGate. Retrieved April 13, 2016.
Guthrie, Julian (April 11, 2003). "Cable car line turns 125 / S.F. celebrates birthday of workhorses of California St". San Francisco Chronicle. Retrieved October 1, 2016.

Sweet, Lolita (August 2, 2021). "From Market Street to Fisherman's Wharf, Cable Cars Return" (Press release). San Francisco Municipal Transportation Agency.
Johnson, Pamela (September 2, 2021). "Celebrating 148 Years of Cable Cars in San Francisco" (Press release). San Francisco Municipal Transportation Agency.
"Cable Car Shutdown Update" (Press release). San Francisco Municipal Transportation Agency. September 13, 2021.
"Powell–Mason/Powell–Hyde Cable Car maps" (PDF). San Francisco Municipal Transportation Agency. August 12, 2017. Retrieved December 5, 2021.
"California Street Cable Car map" (PDF). San Francisco Municipal Transportation Agency. August 12, 2017. Retrieved December 5, 2021.
Menzies, Jeremy (March 29, 2021). "SFMTA's Cable Car Signal Tower Gets a Refresh" (Press release). San Francisco Municipal Transportation Agency.
"Cable Car Single Ride". August 4, 2017.
"2008: 46th Annual Cable Car Bell-Ringing Contest". Retrieved July 10, 2008.

"Ride the Cable Car Lines". Market Street Railway. Retrieved April 13, 2016.
Laubscher, Rick (June 6, 2020). "When politics & dirty tricks savaged our cable cars". Market Street Railway. Retrieved December 8, 2021.
"Museums in Motion – 1984 – Rejuvenation". Market Street Railway. Retrieved October 19, 2007.
"How cable cars work". Market Street Railway. Retrieved December 6, 2021.
"Ride the Cable Car Lines". Market Street Railway. Retrieved December 5, 2021.
"Cable Cars 1954: A Huge Loss". Market Street Railway. March 29, 2016. Retrieved September 11, 2016.

"NHL Summary". Archived from the original on April 6, 2015. Retrieved July 24, 2008.
Jewell, Don (October 1983). "Historic Trolley Festival in San Francisco". Pacific News. Interurban Press. pp. 8–10. ISSN 0030-879X. Archived from the original on June 9, 2019.
"Audit: SF Cable Cars Lacking In Fare Enforcement". KTVU. Archived from the original on November 1, 2007. Retrieved May 13, 2007.