We found a collection of receipts inside the old classic "scry-proof box". Miss Melinda Nakamori and ...
Oh, and somebody had gathered a "sympathetic magic collection" of nearly everybody in town. And somebody else wants it, badly. An alchemist could use it to find anybody from the town, a necromancer or demon-summoner could use it for much more nefarious purposes.
We don't know what will come from the Hell-Bovines not getting whatever they wanted from the mail stagecoach, but worst-case is invasion of the town by all of them. All of them. So that's a useful data point.