In 1954, Poul Anderson introduced grim Norse-style elves in his fantasy novel The Broken Sword and made them full-sized.
In USA, Canada, and the United Kingdom, the modern children's folklore of Santa Claus typically includes diminutive, green-clad elves as Santa's assistants. They wrap Christmas gifts and make toys in a workshop located in the Arctic. In this portrayal, elves slightly resemble nimble and delicate versions of the dwarfs of Norse mythology. However, the elf legends are in fact, even older than Saint Nicholas, the bishop on whom Santa Claus was originally based.
The influence of Shakespeare and Michael Drayton made the use of elf and fairy for very small beings the norm. In Victorian literature, elves usually appeared in illustrations as tiny men and women with pointed ears and stocking caps. There were exceptions, such as the full-sized elves who appear in Lord Dunsany's The King of Elfland's Daughter.The elves of Norse mythology have survived into folklore mainly as females. The lvor (Swedish, singular lva) were stunningly beautiful girls who lived in the forest with an elven king. They were long-lived and light-hearted in nature. They could be seen at night dancing over meadows. The circles they left were called lvdanser (elf dances) or lvringar (elf circles). If a human watched their dance, he would discover that even though only a few hours seemed to have passed, many years had passed in the real world. (This time phenomenon is retold in Tolkien's Lord of the Rings when the Fellowship of the Ring discovers that time seems to have run more slowly in elven Lothlrien. It also has a remote parallell in the Irish sdhe).The term lfsciene ("elf-shining") is used in the Old English poem Judith referring to elven beauty. On the other hand oaf is simply a variant of the word elf, presumably originally referring to a changeling or to someone stupefied by elvish enchantment.