These are very good readings of some good stories. Particularly impressive is Bierce's classic "Occurrence at Owl Creek Bridge." This story holds up well on re-reading. On one level it's a cool "Twilight Zone" kind of story: man has out of body experience as he's about to be hanged. But on a deeper level, the story is about the interplay of mind and matter and about how to face death.
The O Henry pieces are all amusing, but his stories are a bit superficial and contrived, and I'm not sure they really deserve to dominate this collection. Nor are the Crane and London pieces their best.
But these are good stories, and the readers are excellent.