The poem, which has been called "arguably the best-known verses ever written by an American", is largely responsible for some of the conceptions of Santa Claus from the mid-nineteenth century to today. Prior to the poem, American ideas about St. Nicholas and other Christmastide visitors varied considerably. On Christmas Eve night, while his wife and children sleep, a man awakens to noises outside his house. Looking out the window, he sees St. Nicholas in an air-borne sleigh pulled by eight reind