Tags: Locomotive.
The Pennsylvania Railroad’s K4s 4-6-2 Pacific (425 built 1914–1928 PRR Altoona Baldwin) was their premier passenger-hauling steam locomotive from 1914 through the end of steam on the PRR in 1957. Attempts were made to replace the K4s including the K5 and the T1 duplex locomotive but none was really successful and the K4s hauled the vast majority of express passenger trains until replaced by diesel locomotives.
