The 44-48 Route.
Just up the line a little an inbound PCC passes under the high tension lines on the way from Warrington Ave. The PRCo power house was on the hill behind the trees on the right. Those big wires, with the insulation falling off, went all the way through the tunnel on both sides and appeared to rise and fall outside the streetcar window.
R. Hill photo from the collection of Ken Josephson.