This was a dairy cow, and dairy cows have IDs on them. The ID was traced back to the farm in Washington. It's a dairy farm. And that farm now has been quarantined, and the owners have been very cooperative in doing that.
My specialty as a collector is books that almost have value. When I love a book, I don't buy the first edition, because those have become incredibly expensive. But I might buy a beat-up copy of the second edition, third printing, which looks almost exactly the same as the first edition except that a couple of typos have been fixed.