The Brothers Grimm 
The Elves and the Shoemaker [EPUB ebook] 

In The Elves and the Shoemaker a poor shoemaker prepares his last piece of leather to work on before turning in for bed. In the morning, he is amazed to find the shoes already made. Selling these to a grateful customer, his financial obligations are met and he is able to buy enough leather for two more pairs. When these are completed overnight in a similar fashion he stays awake to solve the mystery. Learning that a team of naked elves are responsible for the fine shoes, the shoemaker and his wife create tiny clothes for the elves to thank them. A popular tale that has been adapted many times for film and TV.