Whyte notation (English Wikipedia)

Marsden, Richard (2008). "The LNER 4-4-2 Atlantic Locomotives". The London & North Eastern Railway (LNER) Encyclopedia. Archived from the original on 13 February 2008. Retrieved 8 February 2008.
Marsden, Richard (2008). "LNER 4-6-0 Locomotives". The London & North Eastern Railway (LNER) Encyclopedia. Archived from the original on 13 February 2008. Retrieved 8 February 2008.
Marsden, Richard (2008). "LNER 4-6-2 Pacific Locomotives". The London & North Eastern Railway (LNER) Encyclopedia. Archived from the original on 25 February 2008. Retrieved 8 February 2008.

nps.gov

cr.nps.gov

"Canadian Pacific Railway No. 2929". Steamtown NHS Special History Study. United States National Park Service. 14 February 2002. Archived from the original on 19 May 2007. Retrieved 8 February 2008.

pipex.com

aqpl43.dsl.pipex.com

"Russian Reforms". 6 October 2001. Archived from the original on 18 October 2010. Retrieved 8 February 2008.

railway-technical.com

"Steam Locomotive Glossary". Railway Technical Web Pages. 28 June 2007. Archived from the original on 28 January 2008. Retrieved 8 February 2008.

steamlocomotive.com

"Pacifics". SteamLocomotive.com. Archived from the original on 25 January 2008. Retrieved 8 February 2008.
"Hudsons". SteamLocomotive.com. Archived from the original on 27 January 2008. Retrieved 8 February 2008.
"Boston & Albany 4-6-6 Locomotives in the USA". steamlocomotive.com. Retrieved 21 April 2021.
"The Mikado Type Locomotive". SteamLocomotive.com. Archived from the original on 12 June 2013. Retrieved 8 February 2008.
"Berkshires & Kanawhas". SteamLocomotive.com. Archived from the original on 26 January 2008. Retrieved 8 February 2008.
"Mountains". SteamLocomotive.com. Archived from the original on 30 January 2008. Retrieved 8 February 2008.
"Northerns". SteamLocomotive.com. Archived from the original on 12 February 2008. Retrieved 8 February 2008.
"Lehigh Valley Wyomings". Archived from the original on 13 August 2010. Retrieved 25 May 2010.
"The Texas Type Locomotive". SteamLocomotive.com. Archived from the original on 25 February 2008. Retrieved 8 February 2008.
"The Allegheny Type Locomotive". SteamLocomotive.com. Archived from the original on 27 January 2008. Retrieved 8 February 2008.
"The Challenger Type Locomotive". SteamLocomotive.com. Archived from the original on 1 December 2005. Retrieved 8 February 2008.
Boylan, Richard; Barris, Wes (30 May 1991). "American Steam Locomotive Wheel Arrangements". SteamLocomotive.com. Archived from the original on 26 January 2008. Retrieved 8 February 2008.
"The Yellowstone Type Locomotive". SteamLocomotive.com. Archived from the original on 3 February 2003. Retrieved 8 February 2008.
"Union Pacific Big Boys". SteamLocomotive.com. Archived from the original on 22 September 2009. Retrieved 8 February 2008.
"Virginian Class XA Locomotives". SteamLocomotive.com. Archived from the original on 12 January 2008. Retrieved 8 February 2008.

trains.com

Thompson, Keith (1 May 2006). "Builder's plates: A locomotive's birth certificate". Kalmbach Publishing. Archived from the original on 22 November 2008. Retrieved 8 February 2008.
"Glossary of Common Railroad Terms: M". Kalmbach Publishing. Retrieved 8 February 2008.
Carlson, Neil (3 July 2006). "Steam locomotive profile: 0-10-0". Classic Trains. Kalmbach Publishing. Archived from the original on 29 September 2007. Retrieved 8 February 2008.
"Glossary of Common Railroad Terms: D". Kalmbach Publishing. Archived from the original on 1 January 2007. Retrieved 8 February 2008.
Carlson, Neil (15 June 2006). "Steam locomotive profile: 2-8-8-2". Classic Trains. Kalmbach Publishing. Archived from the original on 16 November 2008. Retrieved 8 February 2008.

trn.trains.com

"Union Pacific Big Boy: The rebirth of a legend". Trains. 23 August 2013. Archived from the original on 12 July 2015. Retrieved 8 November 2016.

web.archive.org

"Steam Locomotive Glossary". Railway Technical Web Pages. 28 June 2007. Archived from the original on 28 January 2008. Retrieved 8 February 2008.
Thompson, Keith (1 May 2006). "Builder's plates: A locomotive's birth certificate". Kalmbach Publishing. Archived from the original on 22 November 2008. Retrieved 8 February 2008.
Marsden, Richard (2008). "The LNER 4-4-2 Atlantic Locomotives". The London & North Eastern Railway (LNER) Encyclopedia. Archived from the original on 13 February 2008. Retrieved 8 February 2008.
"Canadian Pacific Railway No. 2929". Steamtown NHS Special History Study. United States National Park Service. 14 February 2002. Archived from the original on 19 May 2007. Retrieved 8 February 2008.
Marsden, Richard (2008). "LNER 4-6-0 Locomotives". The London & North Eastern Railway (LNER) Encyclopedia. Archived from the original on 13 February 2008. Retrieved 8 February 2008.
Marsden, Richard (2008). "LNER 4-6-2 Pacific Locomotives". The London & North Eastern Railway (LNER) Encyclopedia. Archived from the original on 25 February 2008. Retrieved 8 February 2008.
"Pacifics". SteamLocomotive.com. Archived from the original on 25 January 2008. Retrieved 8 February 2008.
"Hudsons". SteamLocomotive.com. Archived from the original on 27 January 2008. Retrieved 8 February 2008.
"The Mikado Type Locomotive". SteamLocomotive.com. Archived from the original on 12 June 2013. Retrieved 8 February 2008.
"Berkshires & Kanawhas". SteamLocomotive.com. Archived from the original on 26 January 2008. Retrieved 8 February 2008.
"Mountains". SteamLocomotive.com. Archived from the original on 30 January 2008. Retrieved 8 February 2008.
"Northerns". SteamLocomotive.com. Archived from the original on 12 February 2008. Retrieved 8 February 2008.
"Lehigh Valley Wyomings". Archived from the original on 13 August 2010. Retrieved 25 May 2010.
Carlson, Neil (3 July 2006). "Steam locomotive profile: 0-10-0". Classic Trains. Kalmbach Publishing. Archived from the original on 29 September 2007. Retrieved 8 February 2008.
"Glossary of Common Railroad Terms: D". Kalmbach Publishing. Archived from the original on 1 January 2007. Retrieved 8 February 2008.
"The Texas Type Locomotive". SteamLocomotive.com. Archived from the original on 25 February 2008. Retrieved 8 February 2008.
"Russian Reforms". 6 October 2001. Archived from the original on 18 October 2010. Retrieved 8 February 2008.
"The Allegheny Type Locomotive". SteamLocomotive.com. Archived from the original on 27 January 2008. Retrieved 8 February 2008.
"The Challenger Type Locomotive". SteamLocomotive.com. Archived from the original on 1 December 2005. Retrieved 8 February 2008.
Carlson, Neil (15 June 2006). "Steam locomotive profile: 2-8-8-2". Classic Trains. Kalmbach Publishing. Archived from the original on 16 November 2008. Retrieved 8 February 2008.
Boylan, Richard; Barris, Wes (30 May 1991). "American Steam Locomotive Wheel Arrangements". SteamLocomotive.com. Archived from the original on 26 January 2008. Retrieved 8 February 2008.
"The Yellowstone Type Locomotive". SteamLocomotive.com. Archived from the original on 3 February 2003. Retrieved 8 February 2008.
"Union Pacific Big Boys". SteamLocomotive.com. Archived from the original on 22 September 2009. Retrieved 8 February 2008.
"Union Pacific Big Boy: The rebirth of a legend". Trains. 23 August 2013. Archived from the original on 12 July 2015. Retrieved 8 November 2016.
"Virginian Class XA Locomotives". SteamLocomotive.com. Archived from the original on 12 January 2008. Retrieved 8 February 2008.