Steamtown Scranton PAUnion Pacific Railroad #4012 is a 4-8-8-4 "Big Boy" built by the American Locomotive Company. 25 of these were built and the UP was the only road to use them
Photographed by Mark Beebe, February 23, 2009.
Added to the photo archive by Mark Beebe, February 26, 2009.
Railroad: Steamtown - PA.
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