LNER Class A4 4468 Mallard
London and North Eastern Railway locomotive numbered 4468 "Mallard" is a Class A4 4-6-2 Pacific steam locomotive built at Doncaster Works, England in 1938. It is historically significant as the holder of the world speed record for steam locomotives at .
Steam locomotive
Many of the earliest locomotives for American railroads were imported from Great Britain, including first the "Stourbridge Lion" and later the "John Bull" (still the oldest operable engine-powered vehicle in the United States of any kind, as of 1981) however a domestic locomotive-manufacturing industry was quickly established. The Baltimore and Ohio Railroad's "Tom Thumb" in 1830, designed and built by Peter Cooper, was the first US-built locomotive to run in America, although it was intended as a demonstration of the potential of steam traction, rather than as a revenue-earning locomotive. The "DeWitt Clinton" was also built in the 1830s.