The first picture was taken on a Treble-O-Lectric layout I have on a piece of particle board I've had for years and I have both Treble-O-Lectric stuff on it and equipment representing almost all N scale eras. Note the Minitrix FM switcher, Atlas A1G MKT stock car, IM Hormel reefers, Kato F7s, and C&NW Dash 9 in the background.
The funny thing is, We have had a discussion on here, fairly recently, about compatibility and how it affects reliable running. My latest equipment, which includes the F7s, glide absolutely smoothly through those old Treble-O switches made for relatively crude wheel sets!
The second picture was taken on my recently acquired Montgomery Ward (made by Life-Like) Treble-O-Lectric expanded styrene bead layout exactly like the one I got for Christmas in 1963. I had that for about 8 years and donated it to a guy in town whose son wanted to get started in model railroading. I ended up regretting that (not donating it to him but that I didn't have it anymore) and tried to find one for years. This one was on eBay along with many, many, other Treble-O-Lectric items so I threw caution to the wind and bought all of it.
Right now, it's all Treble-O but all my N scale stuff will run on it too.
Doug