British Rail Class 40 (English Wikipedia)

"Class 40 History". Class 40 Preservation Society. 9 March 2018. Retrieved 28 March 2021.
"Class 40 History Part 1". Class 40 Preservation Society. Archived from the original on 13 July 2007. Retrieved 17 July 2007.
"Class 40 History Part 2". Class 40 Preservation Society. Archived from the original on 4 August 2007. Retrieved 23 July 2007.
"History". 9 March 2018.
"Welcome to the Class 40 Preservation". Archived from the original on 26 July 2014. Retrieved 23 July 2014.
"40145". 9 March 2018.

hornbyguide.com

"Hornby BR Class 40". Hornby Railways Collector Guide. Retrieved 1 February 2020.

Burkin, Nigel (December 2017). "Graham Farish 'Whistler'". The Railway Magazine Guide to Modelling. No. 12. pp. 8–9. Retrieved 20 March 2021.

"Incidents in 1967". Railblue.com. Archived from the original on 16 May 2022. Retrieved 23 July 2007.

Devereux, Nigel (12 May 2017). "A FIERY END". Rail Express. Rail Express. Retrieved 3 October 2020.

"Class 40 History Part 1". Class 40 Preservation Society. Archived from the original on 13 July 2007. Retrieved 17 July 2007.
"Class 40 Page". The Railway Centre. Archived from the original on 29 June 2003. Retrieved 18 July 2007.
"Class 40 History Part 2". Class 40 Preservation Society. Archived from the original on 4 August 2007. Retrieved 23 July 2007.
"Our role in piecing together Britain's railway history - the Railway Magazine Magazine". Archived from the original on 6 October 2014. Retrieved 5 October 2014.
"Incidents in 1967". Railblue.com. Archived from the original on 16 May 2022. Retrieved 23 July 2007.
"Welcome to the Class 40 Preservation". Archived from the original on 26 July 2014. Retrieved 23 July 2014.

Flowers, Andy (October 2008). "Whistler Golden Jubilee". The Railway Magazine. Vol. 154, no. 1, 290. pp. 14–21. ISSN 0033-8923.
"Whistle while you work". Rail. No. 84. EMAP National Publications. September 1988. pp. 70–71. ISSN 0953-4563. OCLC 49953699.
"West Coast 'Whistlers'". Rail Express. No. 224. January 2015. pp. 20–23. ISSN 1362-234X.
"Readers' round-up". Rail Enthusiast. EMAP National Publications. August 1983. p. 45. ISSN 0262-561X. OCLC 49957965.
Green-Hughes, Evan (July 2008). "'Whistler' magic". Hornby Magazine. No. 13. Hersham: Ian Allan Publishing. pp. 72–75. ISSN 1753-2469. OCLC 226087101.
"Compass takes 'Whistler' to Saltburn". Rail Express. No. 224. January 2015. pp. 32–33. ISSN 1362-234X.
Wrate, C.H. (November 1983). "40126 - Loco with a dark history". Rail Enthusiast. EMAP National Publications. pp. 28–29. ISSN 0262-561X. OCLC 49957965.
Johnston, Howard (September 1988). "Preservation for Class 40 Nos. 40118 and 40013". RAIL. No. 84. EMAP National Publications. p. 16. ISSN 0953-4563. OCLC 49953699.
"Whistle While You Work". Rail. No. 84. EMAP National Publications. September 1988. pp. 66, 70–71. ISSN 0953-4563. OCLC 49953699.
Wright, Tom (November 2004). "Bachmann's Class 40". British Railway Modelling. Vol. 12, no. 8. Bourne: Warners Group Publications. pp. 42–43. ISSN 0968-0764. OCLC 1135061879.