On Mon, Dec 20, 2021 at 06:44 AM, Tim O'Connor wrote:

Only on one side, with the "A end" on the left and the "B end" to the right.

But your photo of the Overland model shows the train line on the L (left) side, while the builder's photo of 90996
https://pullman-lib.smugmug.com/Railroad-C/i-GPxx846/A

shows the train line on the R (right) side, with the A end to the right in the broadside photo.
Even high quality models aren't necessarily reliable prototype evidence.

Jack Mullen