Locomotive classification on the Pennsylvania Railroad took several forms. Early on, steam locomotives were given single-letter classes. As the 26 letters were quickly assigned, that scheme was abandoned for a more complex system. [1]

The PRR's original locomotive classification system was in force between 1867 and 1895. Under this system, each significant locomotive type was assigned a different class letter even if the wheel arrangements were the same.

Steam Locomotive Roster. Sincere gratitude is extended to the late William D. Edson, whose roster work was the basis for this database. List All: Search by Road Number: Search by Class:

Official state steam locomotive of Pennsylvania alongside PRR 3750. Named Henry Clay. Originally 48' gauge. Restoration to operation is being considered. From Mt. Pleasant, IA, then Salem, OR, then Kentwood, MI. Formerly of Rail City, then Mann's Choice, PA.

After WWII, in 1945, the PRR still operated more than 4000 steam locomotives. During the next 10 years, the PRR began to replace them all with diesels. On Saturday Oct. 20, 1957 a passenger excursion train from Baltimore, powered by #559, an L-1s class 2-8-2 arrived in Northumberland.

The Pennsylvania Railroad’s Class R (later H3) steam locomotives became the primary mainline freight locomotive. The Altoona Shops built more than 825 between 1885 and 1898. Its 2-8-0, or “Consolidation” type wheel arrangement became the most popular design for freight locomotives across the country.

Pennsylvania Railroad Photographic Roster : Reporting Marks: PRR : Click on a locomotive to view pictures

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 production examples, were the last steam locomotives built for the PRR and arguably its most controversial.

Beginning in April 1923, The Maryland & Pennsylvania Railroad was interested in selling engines 23 and 24. These engines, plus numbers 25, 26, 27, 28 and 4, were available to prospective purchasers until about 1939.

The Steam Locomotives of the Pennsylvania Railroad System By Charles E. Fisher April 13th, 1846 marked the date of incorporation of a railroad, that in the years that followed, grew to be fourth in size from a mileage standpoint but ranks first in operating revenues. Over 600 separate railroad corporations have been welded into this vast system ...