Nick, it was nowhere near the yard. You are talking about the RVRR, Andy is asking about the NJWL.
The West Line would have crossed (at grade) the M&E near the junction with todays Gladstone Branch (which was the part of the West Line that was built) and went out thru the school that is on Kent Place Blvd.
The route, while graded has been mostly lost to development, as it wound it's way over towards Hobart Gap Rd.
http://en.wikipedia.org/wiki/New_Jersey ... e_Railroad
I plan on leading an expidition this Spring to trace the railroad from Summit to the Union/Elizabeth border before too much foliage creeps in. During my research to wirite my LVRR book for Arcadia Publishing, I became even more interested in this railroad.
P.S. - Andy, as far as I know, the West Line Ave in Union is an unsubstantiated rumor, but I agree, it is pretty suspicious! I plan to confirm or deny that this year thru some serious research.
CF
M.P. 28.5 On The NY Division