ROCK RIVER WY Sept 24 1978 — Union Pacific SD40-2 3473 rolls across the Wyoming country in the lead of a mixed freight. EMD built the unit (b/n 776088-64) in April 1978. Corrections welcome. My ... (more)

MSSPR's lead unit broke down, so one of the Saint Paul helpers was assigned as the new leader instead. Nice to see a good ol' Dash 2 on the point.