SP 6005B-6007B

These cabless booster units were built with alpha suffixes with associated A-units with corresponding A & C alpha suffixes. They were initially operated in ABC sets, but were never drawbar-coupled. They were renumbered to SP 5910-5912 in 1949.

SP PB-1's - class DP-5 - ALCO-GE const. numbers 75607-75609:

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