Alco S4

    Essentially an S2 with AAR type A trucks.

    Data

    Years Produced: 1950-1961
    Number Produced: 797
    Engine Type: McIntosh&Seymour 539
    Horse Power: 1000

    Example

    OBPA no.1 OBPA no.1
    photo by: Brian Nicholson
    Former Delaware & Hudson #3048, sold to the OBPA 5/1966.

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