Under the Whyte notation for the classification of steam locomotives, a 2-10-4 locomotive has two leading wheels on one axle, usually in a Bissel truck, ten coupled driving wheels on five axles, and four trailing wheels on two axles, usually in a bogie. These were referred to as the Texas type in most of the United States, the Colorado type on the Burlington Route, and the Selkirk type in Canada.
The New York Central Hudson was a popular 4-6-4 "Hudson" type steam locomotive built by the American Locomotive Company (ALCO), Baldwin Locomotive Works and the Lima Locomotive Works in three series from 1927 to 1938 for the New York Central Railroad. Named after the Hudson River, the 4-6-4 wheel arrangement came to be known as the "Hudson" type in the United States, as these locomotives were the first examples built and used in North America. Built for high-speed passenger train work, the Hudson locomotives were famously known for hauling the New York Central's crack passenger trains, such as the 20th Century Limited and the Empire State Express. With the onset of diesel locomotives by the mid-20th Century, all Hudson locomotives were retired and subsequently scrapped by 1957, with none preserved today except for a converted tender from J-1d 5313, which is preserved at the Steamtown National Historic Site in Scranton, Pennsylvania.
Under the Whyte notation for the classification of locomotives, 4-6-4 represents the wheel arrangement of four leading wheels, six powered and coupled driving wheels and four trailing wheels. In France where the type was first used, it is known as the Baltic while it became known as the Hudson in most of North America.
Under the Whyte notation for the classification of steam locomotives, 4-8-4 represents the wheel arrangement of four leading wheels on two axles, eight powered and coupled driving wheels on four axles and four trailing wheels on two axles. The type was first used by the Northern Pacific Railway, and initially named the Northern Pacific, but railfans and railroad employees have shortened the name since its introduction. It is most-commonly known as a Northern.
The Atchison, Topeka and Santa Fe Railway, often referred to as the Santa Fe or AT&SF, was one of the largest Class 1 railroads in the United States.
Under the Whyte notation for the classification of steam locomotives, 2-10-2 represents the wheel arrangement of two leading wheels, ten powered and coupled driving wheels, and two trailing wheels. In the United States and elsewhere the 2-10-2 is known as the Santa Fe type, after the Atchison, Topeka and Santa Fe Railway that first used the type in 1903.
Under the Whyte notation, a 2-8-4 is a steam locomotive that has two unpowered leading wheels, followed by eight coupled and powered driving wheels, and four trailing wheels. This locomotive type is most often referred to as a Berkshire, though the Chesapeake and Ohio Railway used the name Kanawha for their 2-8-4s. In Europe, this wheel arrangement was mostly seen in mainline passenger express locomotives and, in certain countries, in tank locomotives.
Under the Whyte notation for the classification of steam locomotive wheel arrangements, a 2-10-10-2 is a locomotive with two leading wheels, two sets of ten driving wheels, and a pair of trailing wheels.
The Timken Roller Bearing Company was one of the first to introduce roller bearings for railroad cars. Railroad cars owned and operated by the Atchison, Topeka and Santa Fe Railway were some of the first to use roller bearings rather than "oil waste journal" boxes. Henry Timken, a German immigrant, invented an improved bearing and founded the company in 1899. It was later renamed The Timken Company.
Atchison, Topeka and Santa Fe 2926 is a class "2900" 4-8-4 type steam locomotive built in May 1944 by the Baldwin Locomotive Works for the Atchison, Topeka & Santa Fe Railway (ATSF). It was used to pull passenger and fast freight trains, mostly throughout New Mexico, until it was retired from revenue service in 1953. Three years later, it was donated to Coronado Park in Albuquerque for static display.
The Baldwin VO-1000 is a diesel-electric switcher locomotive built by the Baldwin Locomotive Works between January 1939 and December 1946. These units were powered by a naturally aspirated eight-cylinder diesel engine rated at 1,000 horsepower (746 kW), and rode on a pair of two-axle trucks in a B-B wheel arrangement. These were either the AAR Type-A switcher trucks, or the Batz truck originally developed by the Atchison, Topeka and Santa Fe Railway as a leading truck for steam locomotives. 548 examples of this model were built for American railroads, including examples for the Army and Navy.
The Milwaukee Road's class "F7" comprised six (#100–#105) high-speed, streamlined 4-6-4 "Baltic" (Hudson) type steam locomotives built by the American Locomotive Company (ALCO) in 1937–38 to haul the Milwaukee's Hiawatha express passenger trains. Following on from the success of the road's class "A" 4-4-2s, the F7s allowed the road to haul heavier trains on the popular Chicago–Twin Cities routes.
The Santa Fe class 3450 consisted of ten 4-6-4 "Hudson" type steam locomotives built by the Baldwin Locomotive Works in 1927. Built as coal-burners, they were later converted to oil-burning during the 1930s. At the same time, the locomotives were given 79-inch (2,007 mm) driving wheels instead of their original 73-inch (1,854 mm), and the boiler pressures increased from 220 to 230 lbf/in2. Combined, these changes reduced the starting tractive effort from 44,250 to 43,300 lbf, but increased the top speed and efficiency. Their early service was in the Midwest, between Chicago and Colorado; later, some were assigned to service in the San Joaquin Valley of California between Bakersfield and Oakland.
The Valley Flyer was a short-lived named passenger train of the Atchison, Topeka and Santa Fe Railway. The all-heavyweight, "semi-streamlined" train ran between Bakersfield and Oakland, California during the 1939–1940 Golden Gate International Exposition on Treasure Island in San Francisco Bay. Motive power was two Baldwin-built 1300 class 4-6-2 "Pacific" locomotives refurbished and decorated for the train. It was the Santa Fe's first attempt at streamlining older steam power.
Santa Fe No. 5000 is a 2-10-4 "Texas" type steam locomotive constructed by Baldwin Locomotive Works in 1930 for the Atchison, Topeka and Santa Fe Railway. No. 5000 was immediately nicknamed the "Madame Queen" and remained a unique member of its own class. It was donated to the City of Amarillo, Texas in 1957. As of 2023, Santa Fe 5000 is maintained by the Railroad Artifact Preservation Society. Santa Fe 5000 is on the National Register of Historic Places.
Pennsylvania Railroad Class L1s were 2-8-2 "Mikado"-type steam locomotives that were used on the Pennsylvania Railroad during the early twentieth century. These 574 locomotives were manufactured between 1914 and 1919 by the railroad's own Juniata Shops as well as the Baldwin Locomotive Works (205) and the Lima Locomotive Works (25).
Atchison, Topeka and Santa Fe 3415 is a preserved class "3400" 4-6-2 "Pacific" type steam locomotive built in June 1919 by the Baldwin Locomotive Works for the Atchison, Topeka and Santa Fe Railway. Retired in 1954, it sat in Eisenhower Park in Abilene, Kansas, until 1996. At that point, it was put on display in the Abilene and Smoky Valley yard. Restoration began in 2005 and was completed in early 2009. As of October 7, 2023. No. 3415 is out of service, awaiting its federally mandated 15-year overhaul.
The Atchison, Topeka and Santa Fe Railway class 5011 was the last class of steam locomotives to be purchased by AT&SF. The class was introduced by Baldwin Locomotive Works in 1944.
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.
Atchison, Topeka and Santa Fe No. 1316 is a preserved 1309 class 4-6-2 "Pacific" type steam locomotive built by the Baldwin Locomotive Works in 1911 for the Atchison, Topeka and Santa Fe Railway. It was frequently used for pulling fast passenger trains in Texas, until it was reassigned to freight service in the late 1940s. After being retired in 1954, it was donated to the Fort Concho Museum in San Angelo, Texas for static display. In 1980, No. 1316 was acquired by the Texas State Railroad, who moved it to Rusk, Texas and restored it in 1982 as their No. 500. It continued to operate there until 2002, when it was found to be due for an overhaul, and it spent several years in storage, disassembled. As of 2024, No. 1316 has been put back together during a cosmetic restoration and it is awaiting the necessary overhaul required to operate it again.
