Sounds good. I haven't yet searched around to see if there are any G scale clubs around here. I haven't really had much time to set up much of my train collection.
The closest thing I know railroad related around here though is the abandoned RoW of the former Pacific Electric (The old vast network of trolley lines that use to run here in SoCal), which they are turning into a nice bike trail, and an old station soon to be renovated to be a museum (hopefully one I can work at). So far, I've explored and dug out a few artifacts (junk to most people really) along the bike trail which is still under construction, such as various railroad spikes and two tie plates.
Holy crap that's a nice layout! I love the second shot with the Santa Fe train in the foreground and the vomit bonnet in the background. What models are you running? I only have a basic LGB set somewhere in the garage that runs in a circle. I was hoping that someday I could also build a G scale garden layout.