Southern Pacific AC-9 class

E2210163 UNEXPLORED

The Southern Pacific AC-9 class was a group of massive articulated steam locomotives built in the late 1930s for heavy freight service, distinguished by their conventional cab-behind-boiler layout despite being closely related to the railroad’s famous cab-forward designs.

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Label	Occurrences
Southern Pacific AC-9 class canonical	1

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Cab-forward steam locomotives → notableExample → Southern Pacific AC-9 class ⓘ