Milwaukee Road class F7
The F7s are major contenders for the fastest steam locomotives ever built, as they ran at over daily. One run in January 1941 recorded by a reporter for "Trains" magazine saw achieved twice—in the midst of a heavy snowstorm. Baron Gérard Vuillet, a French railroading expert, once recorded a run between Chicago and Milwaukee where the locomotive reached and sustained an average for . However, the British locomotive LNER Class A4 4468 "Mallard" is officially accepted to be the world's fastest, with a run recorded at but authenticated at 126 mph in 1938.
John Bull (locomotive)
John Bull is a British-built railroad steam locomotive that operated in the United States. It was operated for the first time on September 15, 1831, and it became the oldest operable steam locomotive in the world when the Smithsonian Institution operated it in 1981. Built by Robert Stephenson and Company, the "John Bull" was initially purchased by and operated for the Camden and Amboy Railroad, the first railroad in New Jersey, which gave "John Bull" the number 1 and its first name, ""Stevens"". (Robert L. Stevens was president of the Camden and Amboy Railroad at the time.). The C&A used the locomotive heavily from 1833 until 1866, when it was removed from active service and placed in storage.