End of the year quiz #3

NW Mailing List nw-mailing-list at nwhs.org
Tue Dec 23 08:29:09 EST 2014

I was hoping that Jeff Sanders would chime in on this one. I know that 
he could explain their use. There were trimmer signals here in Roanoke 
in several places. I know that they were on the hump and east end of the 
empty side yard.

Jimmy Lisle

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