The files linked to here are scans of some papers found in the bottom of a drawer in the dusty special collections unit just today (06/01/21). I have no idea how old they are though clearly typewritten (possibly daisywheel). They seem to be two versions of the same event written in a kind of Blackwood/Machen esque style (though not as profficient). The most intriguing thing about the papers is that I recently (only two days ago) read a Scottish folk tale about a faerie named Whuppity Stoorie. In the tale it described her as an old woman all dressed in green. This document describes a very similar figure. The synchronicity made the tale seem more significant.
You can read the first of these mystery oddities here and the second one here.