Ayer, MANY-20 (Selkirk to Rigby) eastbound with BM 1726 GP-9, BM 4268 F-7B, 17-- GP-9, PC 3052 GP-40. Note sign on westbound home signal in front of tower indicating "end of cab signal indication territory".
Photographed by Bruce Nelson, August 11, 1973.
Added to the photo archive by Bruce Nelson, December 18, 2014.
Railroad: Boston & Maine.
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