Harry dodged the Smelting stick and went to get the mail. Three things lay on the doormat: a postcard from Uncle Vernon's sister Marge, who was vacationing on the Isle of Wight, a brown envelope that looked like a bill, and -- a letter for Harry.
Harry picked it up and stared at it, his heart twanging like a giant elastic band. No one, every in his whole life, had written to him. Who would? He had no friends, no other relatives -- he didn't belong to the library, so he'd never even got rude notes asking for books back. Yet here it was, a letter, addressed so plainly there could be no mistake:
Mr. H. Potter
The Cupboard under the Stairs
4 Privet Drive
Little Whinging
Surrey

Harry Potter and the Philosopher's Stone - Chapter 3 : The Letters From No One
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