Don't leave childhood without these true classic picture books: 'Each Peach Pear Plum' by Janet and Allan Ahlberg, 'Peepo' by Janet and Allan Ahlberg, 'Slinky Malinki' by Lynley Dodd, 'The Nickle Nackle Tree' by Lynley Dodd and 'Summery Saturday Morning' by Margaret Mahy and Selina Young.