Quick Mythos question

[torrain_circles]

There's either a long short story or a short novella, set in the Mythos (at least, I was sure it was set in the mythos when I read it) that I read a while ago.

The title is something within spitting distance of "A Happening An Incident at Coldcreek Farm". It concerns a protagonist who has rented a room at the farm to get some work done far from meddling distractions. The couple who owns the farm seem perfectly normal at first, although I have an impression that the wife cooked notably good food. And then there are terrible huge pale moths, and dead bodies animated by some strange alien intelligence--fairly standard stuff, you know. It was okay, it's just that I've gotten a sudden craving to read it and if I own it then I *know* it's packed right now, and I can't exactly go looking for the anthology to get out of the library without having the story title.

Help?

EDIT: Found! "The Events at Poroth Farm".