25 kV AC railway electrification (English Wikipedia)

Austin, Edwin (1915). Single-phase Electrical Railways. New York: D. Van Nostrand. pp. 252–269. Retrieved February 16, 2011.
"Feeding Heavy Single-Phase Load from Three-Phase Units". Electrical World. 66 (24): 1300–1302. 1915. Retrieved February 14, 2011.. Primarily focused on turbine generator details at Sherman Creek Generating Station.
"Minimizing Induction from Single-Phase Railway". Electrical World. 63 (18): 984–986. May 2, 1914. Retrieved April 7, 2011.
"West Farms Substation of New Haven Railroad". Electrical World. 66 (24): 1365–1367. 1915. Retrieved February 14, 2011.. Includes a schematic of generator, transformer, and interconnection arrangement.

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"Reduction of Inductive Interference from the Power Lines of the New Haven Railroad". Electric Railway Journal. 43 (18): 960–966. May 2, 1914. Retrieved February 15, 2011.
Arthur, W. (1914). "New Haven Improves Method of Electric Operation". Railway Age Gazette. 56: 988–989. Retrieved February 15, 2011.
"Purchased Power for the New Haven". Electric Railway Journal. 46 (25): 1200–1204. December 18, 1915. Retrieved December 14, 2011.

British Standards Institution (January 2005). BS EN 50163:2004+A1:2007 Railway Applications. Supply voltages of traction systems. doi:10.3403/30103554.
Torchio, P. (1916). "Supply of Single-Phase Loads from Central Stations". Transactions of the American Institute of Electrical Engineers. 35 (2): 1293–1313. doi:10.1109/T-AIEE.1916.4765431. ISSN 0096-3860. S2CID 51632492. Discussion of New Haven Substation at West Farms supplied from commercial utility power stations.

Courtois, C. (1993). "Why the 2*25 kV alternative? (autotransformer traction supply)". IEE Colloquium on 50kV Autotransformer Traction Supply Systems - the French Experience: 1/1–1/4.

"Ministry of Railways (Railway Board)". indianrailways.gov.in. Retrieved 2023-07-05.

"Traxx locomotive family meets European needs". Railway Gazette International. 2008-01-07. Retrieved 2019-09-27. Traxx MS (multi-system) for operation on both AC (15 and 25 kV) and DC (1·5 and 3 kV) networks

Torchio, P. (1916). "Supply of Single-Phase Loads from Central Stations". Transactions of the American Institute of Electrical Engineers. 35 (2): 1293–1313. doi:10.1109/T-AIEE.1916.4765431. ISSN 0096-3860. S2CID 51632492. Discussion of New Haven Substation at West Farms supplied from commercial utility power stations.

"Railroad Coordination Manual Of Instruction, Section 2.1.5 Deseret Power Railway" (PDF). Utah Department of Transportation. May 2015. p. 102. Retrieved 8 November 2016.

"GF6C #6001 PRESERVED". West Coast Railway Association, BC. May 2004. Archived from the original on February 18, 2009. Retrieved 2011-01-09.

SVCs for load balancing and trackside voltage control, ABB Power Technologies. [1] Archived 2007-02-06 at the Wayback Machine
TGV power Archived May 4, 2009, at the Wayback Machine
"GF6C #6001 PRESERVED". West Coast Railway Association, BC. May 2004. Archived from the original on February 18, 2009. Retrieved 2011-01-09.

Hollingsworth, J. B.; Cook, Arthur F. (1998). The great book of trains : featuring 310 locomotives shown in more than 160 full-colour illustrations and 500 photographs. London: Salamander Books. pp. 254–255. ISBN 0-86101-919-9. OCLC 60209873.
Tom McGavin (Autumn 1988). "North Island Main Trunk Electrified". New Zealand Railway Observer. 45 (1). New Zealand Railway and Locomotive Society: 49. ISSN 0028-8624.
Torchio, P. (1916). "Supply of Single-Phase Loads from Central Stations". Transactions of the American Institute of Electrical Engineers. 35 (2): 1293–1313. doi:10.1109/T-AIEE.1916.4765431. ISSN 0096-3860. S2CID 51632492. Discussion of New Haven Substation at West Farms supplied from commercial utility power stations.

"New York, New Haven & Hartford Railroad Electrification," Westinghouse Electric & Manufacturing Company Special Publication 1698, June 1914. Two drawings are available here.