The Wind in the Willows began as bedtime stories and letters addressed to Grahame's troubled son, a sickly boy known as "Mouse" who possibly inspired the wilful character of Mr Toad and who eventually committed suicide, aged 20, while at Oxford. Indeed, so personal were these stories that Grahame never intended to publish his material. The manuscript was first given to an American publisher, who rejected it. After the publication of The Wind in the Willows by Methuen in 1908, it found an unlikely transatlantic fan in US president Theodore Roosevelt who, in 1909, wrote to Grahame to tell him that he had "read it and reread it, and have come to accept the characters as old friends". Elsewhere, the critical response was more mixed, and it was not until AA Milne adapted parts of the book into a popular stage version, Toad of Toad Hall, in 1929, that it became established as the evergreen children's classic it is known as today.