Western Maryland Scenic Railroad No. 734, also known as Mountain Thunder, is a preserved class "SC-1" 2-8-0 "Consolidation" type steam locomotive originally built by the Baldwin Locomotive Works in 1916 for the Lake Superior and Ishpeming Railroad. The locomotive was built for service as a dock switcher and was originally LS&I No. 18. In 1923, the LS&I purchased the Munising, Marquette & Southeastern Railroad and the engine was renumbered to No. 34. It served the LS&I until it was retired from revenue service in 1961. In 1963, it was sold to the Marquette and Huron Mountain Railroad, but never operated under the M&HR flag. In 1971, the locomotive was sold to the Illinois Railway Museum for static display. Since 1991, No. 734 has been owned by the Western Maryland Scenic Railroad in Cumberl