Why this site is needed
The right book at the right time can bring great comfort to a child. Nevertheless, the same book at a different time can bring great distress.
As librarians, we need to be aware of these books and their power.
You will have children devastated by the death of a beloved hamster, and you will also have children lose grandparents. You can bring these books to the child to show them they are not alone, and that in itself can be comforting.
Some children will never find an adult willing to explain basic things like death to them--the book you give them may be the only knowledge they receive, so choose wisely.
Know where these books are so that you may grab them for a panicked teacher who needs the book NOW! It's rare that you will have any warning.