Missing Mummy, a book by Rebecca Cobb (UK: Macmillan, 2011), although not suicide specific, is an illustrated picture book covering some of the
potential worries, concerns and misunderstandings that children faced by the death of a parent
might experience. The child in the story loses their mum, but the story can be adapted to talk about a mum or a dad. Suitable for ages approx. 3-6.

Available via Amazon and in most good bookstores.