The PRR S1 class steam locomotive (nicknamed "The Big Engine") was a single experimental duplex locomotive of the Pennsylvania Railroad. It was designed...

The Pennsylvania Railroad (reporting mark PRR), legal name The Pennsylvania Railroad Company, also known as the "Pennsy", was an American Class I railroad...

The Pennsylvania Railroad (PRR) class T1 duplex-drive 4-4-4-4 steam locomotives, introduced in 1942 with two prototypes and later in 1945-1946 with 50...

The Pennsylvania Railroad K4 was a class of 425 4-6-2 steam locomotives built between 1914 and 1928 for the PRR, where they served as the primary main...

duplex locomotive developed by the Pennsylvania Railroad LNER Class S1, a class of British steam locomotives NER Class S1, a class of British steam locomotives...

Pennsylvania Railroad 1737 was a 4-6-2 Pacific type K4 class steam locomotive built in 1914 as the first of its class and would haul heavier passenger...

Locomotive classification on the Pennsylvania Railroad took several forms. Early on, steam locomotives were given single-letter classes. As the 26 letters...

As railroads around the world haul larger quantities of freight efficiently, the title of world's most powerful locomotive has often been passed to new...

The Pennsylvania Railroad's S2 class was a steam turbine locomotive designed and built in a collaborative effort by Baldwin Locomotive Works and Westinghouse...

the early 1920s, later 4/10 Only one was produced, the Pennsylvania Railroad's sole class S1 of 1939. It was a duplex locomotive, the longest and heaviest...

that used on the S1, S2, and T1 passenger locomotives. Q1 was the last dual service locomotive designed by the Pennsylvania Railroad, but there is no...

the DT&I's parent company, the Pennsylvania Railroad, merged with its longtime rival, the New York Central Railroad, to become the Penn Central, which...

Philadelphia with ties to the large Pennsylvania Railroad. The PRR was seeking a southern connection for its Shenandoah Valley Railroad (SVRR), which was then under...

further interest. The next usage of the duplex type was the Pennsylvania Railroad's single S1, designed to meet a requirement to operate a 1,200 short tons...

operated by the Pennsylvania Railroad (PRR) between New York City and Chicago. It operated from 1912 to 1995. It was the Pennsylvania's premier train,...

between New York and Chicago via Pittsburgh, Pennsylvania on 17:25 schedule operated by the Pennsylvania Railroad. The trains departed New York City and Chicago...

Baldwin and the Pennsylvania Railroad made an all-in bet on the future of steam in passenger rail service with Baldwin's duplex-drive S1 locomotive. It...

and central Illinois, through parts of Indiana, Michigan, Ohio, and Pennsylvania, to western and central New York State. Some definitions of the Rust...

Annapolis 70 tonner #50 built in 1950 Baltimore & Ohio (Octoraro) S1 #3 Canton Railroad Baldwin VO-1000 #32 built in 1944 Baltimore & Ohio GP7 #6405 built...

locomotive to be built in the United States for a Class I railroad was 0-8-0 no. 244, a Class S1 switch engine erected by the Norfolk and Western's Roanoke...

The Liberty Limited was a named train on the Pennsylvania Railroad. It ran from Washington D.C. to Chicago, Illinois, through Baltimore, Harrisburg and...

for the Bath and Hammondsport Railroad, the Western New York and Pennsylvania Railroad and the Ontario Midland Railroad. The route that is now the Livonia...

use the 4-4-4-4 arrangement were the Pennsylvania Railroad's 52 class T1 locomotives (although the single class S1 was originally intended to be a 4-4-4-4...

The Manhattan Limited was a passenger train of the Pennsylvania Railroad which served the Chicago—New York City route.[citation needed] The Manhattan...

competitor Allis-Chalmers. He undertook numerous railroad designs, including the Pennsylvania Railroad GG1, S-1, and T1 locomotives, the color scheme and...

in Philadelphia, Pennsylvania in 1837 and brought to Vienna. The locomotive was named Philadelphia and a bridge across the railroad between the railway...

locomotive is six, as seen on the 6-2-0 Crampton type and the Pennsylvania Railroad's 6-4-4-6 S1 duplex locomotive and 6-8-6 S2 steam turbine. Six-wheel leading...

County, Pennsylvania, and was the original owner of the Lancaster site on which the factory was situated. During the expansion of the railroads in the...

and Railroad Entrepreneurship." Journal of Economic History 10.S1 (1950): 53-67. Duran, Xavier (March 2013). "The First U.S. Transcontinental Railroad: Expected...

L&N with 45 locomotives; the C&NW, with 29 locomotives; and the Pennsylvania Railroad (PRR) with 27 locomotives. Major customers for the S-3 included...