A completely trustworthy collection by reliable individuals you probably already know if you've read things older than 1980. Lovecraft, Bradbury, Sturgeon, Bierce, etc. I got this specifically for Kuttner's Graveyard Rats, which was quite fun. I had no idea Roald Dahl wrote horror and that story was quite dark. Counselman's Night Court I've read before (amongst others here) and I'm always so disappointed by how racist it comes of, like much of her other work too, because it's an otherwise great story.
A few were duds for me, like the Hughes and West stories, but all are so tiny and fast that I didn't have time to be bothered about it. A particualy solid collection for someone unexperienced with but interested in pre-modern horror.