Perry, in my area of SE PA, I have no doubt that a lot of the "strange, but true" is, um...true. And there are also some interesting features that are somewhat common, such as the un-deeded easement that the north side driveway along our property lies on. We share that drive with our neighbor, but neither of us owns it. It's also not owned by the property owners behind our lands (the end of a mountain...essentially a cliff), yet it's there to insure access to that land. "Nobody" owns that narrow strip. And on the south side of my property, there was always an assumption that the line was congruent with the tree line. Not so...a survey we had done when putting on our addition clearly showed that the actual property line was about 8' farther south, much to the current dismay of the adjoining property's tenant who now has to move his brand new fence.
A lot of the original land arrangement in this area dates back to when William Penn, umm....appropriated it from the native Americans. Large chunks went to a single family. That was further broken up into ~100 acre sections which over time was broken up further. I'm sure there were lots of opportunities for tees not being dotted and eyes being crossed along with transpositions and other errors in recording. 'Nature of the beast...
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The most expensive tool is the one you buy "cheaply" and often...