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.
Museum of Science and Industry (Chicago)
The "999 Empire State Express" steam locomotive was alleged to be the first vehicle to exceed in 1893, although no reliable measurement ever took place (and such a speed was likely impossible). Designed to win the battle of express trains to the World's Columbian Exhibition, it was donated to the museum by the New York Central in 1962. The locomotive was located outside the museum until 1993, when extensive restoration took place and it was moved indoors as an exhibit in the Transportation Zone.