This loco was built in 3/1953 with EMD serial number 18022. She was built as a freight roadswitcher, model GP7.

In the early 1960's, she was one of 15 MP freight GP units modified for passenger service. She received a steam generator, larger fuel/water tank and roof mounted air resevoirs. It is unknown if the renumbering was done at the same time as the modifications.

She was renumbered to MP 323.

She was renumbered to MP 1774.

MP 323:

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