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 (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 class Q1, #6130, was a single experimental steam locomotive designed for dual service. The locomotive entered service in 1942...

The Pennsylvania Railroad (PRR) K4 4-6-2 "Pacific" (425 built 1914–1928, PRR Altoona, Baldwin) was its premier passenger-hauling steam locomotive from...

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...

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

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

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 PRR's duplex locomotive classes and other experimental designs in the late steam era. Pennsylvania Railroad class S1 a lone prototype 6-4-4-6 used...

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 were...

(reporting mark NW), commonly called the N&W, was a US class I railroad, formed by more than 200 railroad mergers between 1838 and 1982. It was headquartered...

steam 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 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...

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...

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...

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...

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...

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...

speeds: the Pennsylvania Railroad's inspector stated that it rode better than any of their own steam locomotives except for the 6-4-4-6 class S1. They also...

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...

between 1923 and 1932: one of class C1 (in 1923); both of the conversions from class C7 to class C9 (in 1931); and one of class S1 (in 1932). The remaining...

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

Union Pacific Railroad chose a four-wheel leading truck and drivers of 68 inches (1.73 m) for its Big Boy 4-8-8-4 class.) Several classes of Yellowstone...

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

Railroad (LV). The Richmond, Fredericksburg and Potomac Railroad (RFP) gave each of its three 4-8-4 classes a separate name, the "General" of 1937, the "Governor"...

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

Several speed claims are tied to the Pennsylvania Railroad and their various duplex locomotive classes. The S1 class during its lifetime was attributed...

Cincinnati, one of which went through to Chicago on train 71 of the Pennsylvania Railroad. Pocahontas also handled a Winston-Salem to Columbus 10-6 sleeping...

northern parts of the Southern United States. It includes Western New York, Pennsylvania, Ohio, West Virginia, Indiana, Illinois, the Lower Peninsula of Michigan...