P&W deployed 4,500hp to drag the heavy/lengthy circus train upgrade at 3+/- mph from the Cambridge St Yard to the Barbers switch where Pan Am would take over with almost three times as much horsepower. The P&W B23-7/B23-S7 combo cut-off and moved up the Gardner branch as PAR 2 heads down to couple on for the 70 mile trip to Manchester, which would consume 13 or so hours.

Photographed by John Barlow, April 17, 2017.
Added to the photo archive by John Barlow, April 18, 2017.
Railroad: Pan Am Railways.

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