Any information on a book of short stories?

I don't remember title, publisher, editor, or anything other than the cover, which might have been pink or red. It contained, among other stories, "The Willows" by Algernon Blackwood and "The Vertical Ladder", by William Sansom. It also had a story about a boy who brings home a caterpillar, which turns into a erfly and kills him, and a story about Leonardo Da Vinci inventing the submarine, I think. This was a while ago, 10 or 11 years. I would greatly appreciate any information anyone has on this book.