Most of these stories can be found in other books or sources. Overall a good collection, though some of the stories delve too much into the metaphoric or philosophic concept of ghosts rather than tell a cinematic-type ghost story.
Quite a few of these stories are dated from the 19th or early 20th century, so there are some authors whose works you can try and look up on the Gutenberg Project. Others are by wildly famous authors like Shirley Jackson, Ruth Rendell, and Joyce Carol Oates. Bios of each author are presented at the beginning of each story, and a few have interesting tidbits.
If you're an overly sensitive dog-lover, you might want to skip "Kerfol", though it is one of the best written stories in the collection.