WP 3544

This loco was built in 9/1971 with EMD serial number 37855. She was built as a freight roadswitcher, model GP40.

She became UP 691 in the early 1980's when UP merged with the Western Pacific.

She was sold for continued service and became CMNW 3010.

She became GWWR 3010.

She was rebuilt as a GP40M-2 by Morrison-Knudsen and became SSW 7278.

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