Here is a photo tour of the Guest Bedroom layout. I do not profess to be a photographer and took these with a point and shot digital camera. So, the quality and lighting leaves something to be desired.
To the left of the entry door, is the start of Armstrong. Here an 2-6-0 consolidation is about to spot the C&O box car at the Lewis Grocery distributor.
Note that the main line has the pinkish ballast used in some places by the Santa Fe and CNW (an AZ Rock and Mineral product.) to help visitors destingish the main from the secondary tracks.
I put the two drywall screws in so I can stretch an elastic band across them when the entry bridge is down.