PB-99 and PB-100 were expedited piggyback trains operating between Chicago and Boston via the Erie Lackawanna, Delaware & Hudson, and Boston & Maine, using pooled power from the three railroads. Here, eastbound PB-100 has arrived in Binghamton on the E-L early in the evening with three B&M units. A D&H unit is being added to the head-end and the train soon will be on its way to Mechanicville..