THE TWENTY-FIVE Niagaras of this type were almost the last steam locomotives to be purchased by the New York Central. Built in 1945 and 1946, the S1’s were designed as dual-purpose engines (from catskillarchive.com)
The Centrals last steam run in New York state was on August 7, 1953 with locomotive No. 6020 taking train #185 out of Harmon. Employees Timetable, No. 71 from the Mohawk and Hudson Divisions dated Sunday, April 29, 1951 lists Train 185 as a MILK TRAIN with a footnote stating “Will not carry passengers”. Train 185 was a New York – Utica milk train that ran via Rensselaer Yard. It departed Croton at 10.50 a.m. My Electric Division and New York Terminal District Time Table shows No. 185 originating at 60th Street on the NYTD.
The last passenger train was in September 1952.