The original "Lafayette" steam engine was built in 1837 by Norris Locomotive Works in Philadelphia but long ago scrapped. This replica was built next door to where it sits on display at the B&O Mt. Clare shops in 1927. It was to be featured (in lieu of the scrapped original) in the "Fair of the Iron Horse" during 1933/ 34. What made this engine significant was that it was the first engine with a horizontal boiler which likely set the standard configuration for steam engines from that point forward. It also had another first; a pilot truck that swiveled to help steer the engine. This replica was made operational once again by the Strasburg Rail Road shops for an event at the B&O Museum in 2002 for yet another "Fair of the Iron Horse" which failed to materialize after a heavy snowfall cause the roof to collapse at the Museum, since repaired. It has however operated since, most recently in October of 2015. From what I understand, further work (and funding) is now necessary before it can run again.