“Clear Signal: Poplar” CSX R171 (the former OBSS, Orange Blossom Special-South), with RF&P GP40 121 on point, is westbound approaching the Poplar intermediates at mp 82.5 on the CSX (former B&O) Philadelphia Subdivision on July 5, 1987 at 11:14.
The trailing units are (2) CSR/B&O GP40-2 6197(CSX#), ex-B&O 4298 (3) SS/SBD B36-7 5834, and (4) CSR/C&O GP40-2 4173.
Same train, crossing the Thomas Viaduct 33 minutes later, at photo 605810.
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