Thank you, everyone for the comments.....
I believe one of you guys have nailed it........I have invisible catenary......
Tom.....the layout is 6X16......it is 3 unconnected levels......The benchwork is by Mianne.
The main level is 6X16. The engine yard is 2X16. The subway is 6X8.
It doesn't look like I have accomplished much over the last 2 years......but I lost a year's worth of work when my Atlas switch machine fried.... I have just finished re-wiring the Atlas switches with D1000s. My next task is wiring the engine yard switches to an SC-2.
Next will be wiring the accessories.....then scenery. I figure 2-3 years to complete.
The plan has been altered to eliminate the curved switches (per gap was too long for my small locos) and I removed the rear passing siding.
I used tubular track because I have a ton and since this is at eye level, once ballasted, the tubular track will be essentially invisible.
I made a large copy of the plan to work from......
BTW....my dad's family lived in Larchmont....north of the station next to the 4 track main line.....I grew up watching McGinnis liveried Jets and NH washboards.
Peter