Union Pacific Alco RS27 (2400hp) numbered 675-678 originally built as ALCO demonstrators, purchased by UP in 9/61. Units 675-676 sold to Montreal Locomotive Works as MLW 675-676, 4/71. Resold t... (more)
One of only four of UP RS27's leads a U50, GP30B and a SD24 on a mixed freight. No photographer name on slide.
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