LNER Class A4
The Class A4 is a class of streamlined 4-6-2 steam locomotive designed by Nigel Gresley for the London and North Eastern Railway in 1935. Their streamlined design gave them high-speed capability as well as making them instantly recognisable, and one of the class, 4468 "Mallard", holds the world record as the fastest steam locomotive. Thirty-five of the class were built to haul express passenger trains on the East Coast Main Line route from London Kings Cross via York to Newcastle, and later via Newcastle to Edinburgh, Scotland. They remained in service on the East Coast Main Line until the early 1960s when they were replaced by Deltic diesel locomotives. Several A4s saw out their remaining days until 1966 in Scotland, particularly on the Aberdeen - Glasgow express trains, for which they were used to improve the timing from 3.5 to 3 hours.
Baldwin Locomotive Works
There are many Baldwin built steam locomotives currently operating in the United States, Canada, and several other countries around the world. Out of all the Baldwin built steam locomotives that are operational or have operated in recent years, the most recognized locomotives are Reading 2101, Southern Railway 4501, Frisco 1522, Nickel Plate 587, Southern Pacific 2467, Southern Pacific 2472, Spokane, Portland and Seattle 700, the oldest surviving 4-8-4 Northern type steam locomotive, Santa Fe 3751, and the last domestic steam locomotive Baldwin built, Chesapeake and Ohio 1309.