[Look at the lines in the lower right. They're quite different from my first guess.That corner has been a puzzler.]
I enlarged, enhanced and printed out the EVRR track plan scan. I then traced it on to some paper to better see the lines. I've done a few tracings since this one to help me work out the wiring. It's tricky and I think a couple different wiring schemes are possible. And I'm wondering if E. L. Moore designed this plan. Maybe someone else did. For someone who freely admitted he wasn't too skilled with wiring, it's a head scratcher.