Is Daddy Coming Back in a Minute?: Explaining (sudden) death in words very young children can understand by Elke Barber, Alex Barber

I think this sad, lovely little book is the best picture book that I have seen that explains death to a young child.  It is based on a true story and Alex, who was 3 years old when his father passed away, contributed to the story.  His mother explains that his father can't come back because his body has stopped working and that it is ok to be sad.  The book continues and shows that a year later, Alex is mostly happy, but it is still ok when he is sad sometimes.  I received this book free to review from Netgalley and I highly recommend it.