I have been by here several times to find benchmarks.
BOSTON AZIMUTH MARK
Is one right across the Highway from this Old Town.
This is part of the Civil War Route of Missouri,Kansas and Oklahoma.
It is also where many towns ceased to exist.
I had found a benchmark stone nearby but it disappeared before I could get back for better images of it.
Great area for a History tour of this part of the area of Missouri.
As always have fun be safe and
Happy ........................................Waymarking