In 1911, the Marquette & Southeastern merged with the Munising Railway, a short line between Munising and Princeton, MI.
The Munising, Marquette & South Eastern Railroad merged with the Lake Superior & Ishpeming Railroad in 1923.
The LS&I renumbered the locomotive #24, and modernised it with a wider firebox in 1931.
The locomotive was retired in 1939 and it was donated to the National Railroad Museum as their first steam locomotive to operate as a tourist engine.
Today it's still at National Railroad Museum but the engine is now a static display.