I break this book out every other Christmas season or so to re-read a few tales. It includes a real chiller by Robert Bloch plus stories from H.G. Wells, Ramsey Campbell and H.P. Lovecraft in addition to the intro by Isaac Asimov.
Mine's an ex-library edition, so it's tattered a bit, but still very readable.
Apparently a 13 Horrors of Halloween anthology exists also, but I've unfortunately never run cross that one. Need to look for it.