Great stuff, Jerseyman. I was inspired to open up Google Earth and try to fit the historic map of Pointville into some geographical context. Here is a shot of Pointville today, such as it is:
And here is the same image with the historic map overlayed at 60% opacity:
If you look carefully at the satellite imagery you can just see the hints of the old roads, although the one leading off to the southeast appears to be wrong in terms of angle. Perhaps it was moved at some time before disappearing alltogether, or perhaps the cartographer just got it slightly wrong.
Edit: I looked at it again and I think the mapmaker just got the angle wrong. If you follow the shadow of the old road southeast it lines up with Range Rd., and you can clearly see how it was rerouted around the perimeter of the base.