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Maker's engine number: 4
1833 Built for the Camden and Woodbury Railroad.
"In considering the general design of the Fire Fly, it is at once apparent that it includes the main feature of Crampton's subsequent well-known patent with the driving wheels behind the fire-box. Nevertheless, Crampton's design was independently conceived, and it was many years later before he heard of these 4-2-0 engines for America." Extract from The Engineer 1925