Westbound RW-1 coming off the Stoney Brook passing through Willows Interlocking. Look close on the westbound main you can see the distant block signal for Ayer Interlocking. This is back in the day when there was two signal blocks between Willows and Ayer, now only one.
Photographed by Bruce Nelson, May 6, 1973.
Added to the photo archive by Bruce Nelson, October 6, 2017.
Railroad: Boston & Maine.
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