Strasburg Rail Road (Norfolk and Western) 475 is a 4-8-0 "Mastodon" type steam locomotive built by the Baldwin Locomotive Works in June 1906 as part of the Norfolk and Western Railway's (N&W) first order of M class numbered 375–499. It was first assigned to haul freight trains on the N&W mainline before being reassigned to branch line duties on the Blacksburg Branch in the 1920s. Retired from revenue service in 1958, No. 475 was sold to various different owners in Pennsylvania, Illinois, and Iowa until 1991 when it was purchased and restored by the Strasburg Rail Road (SRC) in Strasburg, Pennsylvania, where it runs tourist excursion trains in the Pennsylvania Dutch countryside. Since then, No. 475 became the only 4-8-0 locomotive operating in North America and the oldest operating steam lo