Hello Dave and Ed! Great suggestion on checking Sanborn Insurance maps. I intend to ask if those might be available at the Mechanic Falls Historical Society.
As I found out a few years ago at the Norway Historical Society (when I was researching the Norway Branch Railroad), the Sanborn maps have all the rail detail one could hope for.
If Mechanic Falls H.S. has a map available, I'm going to ask to be able to make a copy for the W.W. & F. Ry. Museum archives, as doing so fits the collecting mission of our archives department.
What I found in Norway was for me, just incredible. The map showed all trackage and all customers. The copy that Norway H.S. has is fragile and needs to be copied.
Occasionally these maps show up on eBay, but I have yet to find one of a two-footer town.