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12'4" x 29'8"
The layout is basically very similar to a typical S-scale modular layout set up at a train show, in that you walk around the layout on the outside. It is set up in the center of the room, with the interior of the layout hidden via backdrops (to hide the structural poles used in the house. While the layout supports switching on both sides of the long edges, Bill's preference is to run long trains, which he can definitely do.
Called the "PRR Alphabet", this "photo-stacked" photo shows Bill's various PRR steam locomotives, from left to right: A5 (0-4-0, "Switcher"), B6 (0-6-0, "Shifter"), I1 (2-10-0, "decapod"), J1 (2-10-4, Texas"), K4 (4-6-2, "Pacific"), M1a (4-8-2, "Mountain").
Another stacked photo showing the front of the Reading coal drag all the way to the back perfectly in focus.
This photo was taken during a 2012 visit to Bill's layout. It shows how Bill did his layout's fascia. This portion of the layout has scenery below the main line's track, which yields a very dramatic effect. The entire fascia is composed of the track plan, for easy control of the various turnouts.