A GGI has brought Pennsylvania Railroad's Broadway
Limited in from New York, but catenary expires
here in Harrisburg, PA., and steam will relay
the extra-fare, all-Pullman limited for the balance
of its 907-mile overnight journey to Chicago.
Only 5 minutes are allowed for the change of power,
so double headed K4 Pacifics ease back promptly
to lock couplers with the Railway Post Office
on the headend of No. 29.