- ^ Cawthorne, Nigel (2011). A Brief History of Sherlock Holmes. Running Press. p. 138. ISBN 978-0762444083.
- ^ a b "His Last Bow". De Encyclopédie de Conan Doyle & Sherlock Holmes. Société Sherlock Holmes de France. Retrieved 21 January 2014.
- ^ a b "His Last Bow: Some Reminiscences of Sherlock Holmes". De Encyclopédie de Conan Doyle & Sherlock Holmes. Société Sherlock Holmes de France. Retrieved 21 January 2014.
- ^ Doyle, Arthur Conan (October 1979). The Sherlock Holmes Omnibus (2nd illustrated ed.). John Murray. ISBN 071953691X.
- ^ Barnes, Alan (2011). Sherlock Holmes on Screen. Titan Books. pp. 13–14, 64–66, 104–105. ISBN 9780857687760.
- ^ Dickerson, Ian (2020). Sherlock Holmes and His Adventures on American Radio. BearManor Media. p. 49. ISBN 978-1629335087.
- ^ Dickerson, Ian (2020). Sherlock Holmes and His Adventures on American Radio. BearManor Media. pp. 88–89, 103, 129. ISBN 978-1629335087.
- ^ Barnes, Alan (2011). Sherlock Holmes on Screen. Titan Books. pp. 21–23, 41, 114–115, 152–153. ISBN 9780857687760.
- ^ Bert Coules. "His Last Bow". The BBC complete audio Sherlock Holmes. Retrieved 12 December 2016.
- ^ Wright, Stewart (30 April 2019). "The Classic Adventures of Sherlock Holmes: Broadcast Log" (PDF). Old-Time Radio. Retrieved 5 December 2020.
First edition dustjacket image courtesy of Lucius Books Ltd.