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Bessemer and Lake Erie Railroad No. 643 is the sole survivor of the class H-1 2-10-4 "Texas type" steam locomotives built by the Baldwin Locomotive Works in 1944 for the Bessemer and Lake Erie Railroad, primarily used for hauling heavy mainline freight trains in Pennsylvania and Ohio, until retirement in 1952.
The Union Pacific Big Boy is a type of simple articulated 4-8-8-4 steam locomotive manufactured by the American Locomotive Company (ALCO) between 1941 and 1944 and operated by the Union Pacific Railroad in revenue service until 1962.
Southern Pacific 4294 is a class "AC-12" 4-8-8-2 cab-forward–type steam locomotive that was owned and operated by the Southern Pacific Railroad (SP). It was built by the Baldwin Locomotive Works in March 1944 and was used hauling SP's trains over the Sierra Nevada, often working on Donner Pass in California.
Union Pacific 844 is a class "FEF-3" 4-8-4 "Northern" type steam locomotive owned and operated by the Union Pacific Railroad for its heritage fleet.Built in December 1944 by the American Locomotive Company (ALCO) of Schenectady, New York, No. 844 is one of four surviving FEF series locomotives and the only one in operation.
The Santa Fe 2900 Class was a series of 30 4-8-4 type steam locomotives built between 1943 and 1944 for Atchison, Topeka and Santa Fe Railroad and pulled freight and passenger trains until retirement in the early to late-1950s.
Each set of driving wheels is driven by two steam cylinders. In essence, the result is two engines under one boiler. Union Pacific developed five types of Challengers: the "light" CSA-1 and CSA-2 classes and the "heavy" 4664–3, 4664–4, and 4664-5 classes. The railroad sought powerful locomotives that could handle mountain grades at high speeds.
The PRR J1 was a class of 2-10-4 "Texas" type steam locomotives built between 1942 and 1944. The J1 had over 95,000 pounds-force (422.6 kN) of tractive effort, plus an additional 15,000 lbf (66.7 kN) if the booster engine was used.
Union Pacific 844, the only steam locomotive never retired by a North American Class I railroad. The 4-8-4 wheel arrangement was a progression from the 4-8-2 Mountain type and, like the 2-8-4 Berkshire and 4-6-4 Hudson types, an example of the "Super Power" concept in steam locomotive design that made use of the larger firebox that could be supported by a four-wheel trailing truck, which ...