Never been to Easton personally but this one caught my attention because the pattern matches what I've been reading about in older industrial sites across the northeast US. Mill buildings specifically have this thing where the residual energy from years of repetitive labour seems to create something almost like a recording - sounds, movement, that kind of thing. Stone Tape theory basically.
What kind of experiences are we talking here? Because there's a big difference between classic residual haunting stuff and something more interactive. If its responding to you, acknowledging your presence, that changes the classification entirely and honestly makes it more interesting from a research standpoint.
Anyone actually done a proper overnight investigation with equipment or is this all just anecdotal? Not dismissing anecdotal, it has its place, but if nobody's got baseline EMF readings or audio then we're just swapping ghost stories.