Chesapeake and Ohio class M-1
The Chesapeake and Ohio class M-1 was a fleet of three steam turbine locomotives built by the Baldwin Locomotive Works for the Chesapeake and Ohio Railway in 1947–1948 for service on the "Chessie" streamliner . 
<triplet> Chesapeake and Ohio class M-1 <subj> Baldwin Locomotive Works <obj> manufacturer <subj> Chesapeake and Ohio Railway <obj> operator