I hope that this is the final version, as I have other projects to pursue. Changes include coloring railroad trucks, the engine and most noticeably the wagon. I also slightly “weathered” the roof and tweaked things around the foliage. The color I’m least confident of, is the wagon box. I made it blue to match quartermaster wagon colors, but it’s just a wild guess. The red wagon and railroad wheels were very common at the time, so at least they are plausible.
Next thing I’m going to try to do is to build a model engine house with foam core board covered with printed (colorized) images of the actual engine house.