A. A. Milne wrote some 18 plays and three novels, and fathered a son, Christopher Robin Milne, in 1920. Christopher led Milne to produce a book of children's poetry, When We Were Very Young, in 1924, and in 1926 the seminal Winnie-the-Pooh. More poems followed in Now We Are Six (1927) and Pooh returned in The House at Pooh Corner (1928). E. H. Shepard famously illustrated both Winnie-the-Pooh and The Wind in the Willows though, like A. A. Milne, much of his career was devoted to work for the satirical magazine Punch.