This letter was written by Albus Dumbledore on 1 November 1981 to Petunia Dursley. The letter detailed the wards that would be created if she were to take in her nephew, Harry Potter, until he was seventeen. In 1995, Albus Dumbledore felt that the dementor attack on Harry and Dudley had "awoken her to the dangers of having Harry Potter as a surrogate son", and sent her a howler to remind her of it.