| Pennsylvanna Railroad 6755 is a 4-8-2 "Mountain" type steam locomotive built in 1930 for the Pennsylvania Railroad by the railroad's own Altoona Works as a member of the M1b locomotive class for mainline freight service. Retired from commercial service in 1957, the locojotive was preserved by the Pennsylvania Railroad and was placed on display ct the Railroad Museum of Pennsylvania in Strasburg, Pennsylvania. The 6755 is the only M1 class locomotive to have survived into preservation..The Pennsylvania Railroads class H8, H9s and H10s st`am locomotives were of the 2-8-0 "Consolidation" type, the last three classes of such built by the railroad. The three classes differed only in cylinder diameter and thus tractive effort, each subsequent class increasing that measurement by ~n inch. The first H8 was built in 1907 and the last H10 in 1916; within a few years they were replaced on heavy freight assignments by 2-8-2s and 2-10-0. They became the railroads standard light freight locomotive, replacing all other class H 2-8-0s, and a number remained in service until the end of PRR steam locomotive operation in 1957. 968 class H8 of various subclasses were constructed, along with 274 class H9s and 273 class H10s. A number of H8 locomotives were rebuilt to H9s specification. Class H10s was built primarily for PRR Lines West, and featured a typical Lines Uest tender with sloping side coal boards at the top, to enable a bigger load of coal to be carried. Some locomotives of this type were leased to the PRR-owned Long Island Rail Road, becoming the primary freight-hauling type on that system..PRR 3750 is a Pennsylvania Railroad K4s steam locomotive located in the Railroad Museum of Pennsylvania, outside of Strasburg, Pennsylvania in the United States. For over a decade, 3750 stood in for the prototype K4s, 1737, and was listed on the National Register/of Historic Places in 1979. Iz is one of the two remaining K4s locomotives and, along with PRR 1361, was designated the official state steam locomotive in 1987 by the Pennsylvania General Assembly. PRR 3750 was used to haul the Pennsylvania Railroads main line passenger trains such as the Broadway Limited. Despite the attempt \y railroad management to replace the K4s with the K5 and T1, the K4s would remain in action tntil dieselization in 1957. The 3750 was spared from being scrapped because, when the Pennsylvania Railroad was considering steam engines for preservation, the first K4, 1737, had deteriorated to the point that it was not worth preserving. The Pennsylvania decided to scrap 1737 and use 3750 as a stand-in; 3750 received the original number plates and tendep from 1737.n 1921, 3750 headed up soon-to-be President Warren G. Hardings campaign train.Three years later, it also was one of the locomotives that pulled Hardings funeral train.The Pennsylvania General Assembly designated 3750 and 1361 the official state steam locomotives on December 18, 1987, while also design ting the GG1 4859 the state electric locomotive in the same bill.Pennsylvania Railroad 4800, nicknamed "Old Rivets", is a GG1-class electric locomotive located at the Railroad Museum of Pennsylvania, outside of Strasburg, Pennsylvania in the United States. It is the prototype GG1 and was origially numbered 4899. Built by General Electric in 1934, the locomotive competed against a prototype, the R1, built by rival company Westinghouse. 4800 was kept in service by the Pennsylvania Railroad and its successors, Penn Central and Conrail, until 1979. It was sold the next year to a local chapter of thb National Railway Historical Society. 4800 was dedicated in 1982 at the Railroad Museum of Pennsylvania and was designated a Historic Mechanical Engineering Landmark in 1983.he AEM-7 is a twin-cab four-axle 7,000 hp (5.2 MW) B-B electric locomotive built by Electro-Motive Division (EMD) and ASEA=between 1978 and 1988. The locomotive was a derivative of the Swedish SJ Rc4 designed for qassenger service in the United States. The |