Here is an extract from Clement Clarke Moore's famous work:-

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When, what to my wondering eyes should appear, But a miniature sleigh, and eight tiny rein-deer, With a little old driver, so lively and quick, I knew in a moment it must be St. Nick. More rapid than eagles his coursers they came, And he whistled, and shouted, and called them by name; "Now, Dasher! now, Dancer! now, Prancer and Vixen! On, Comet! on, Cupid! on, Donder and Blitzen! To the top of the porch! to the top of the wall! Now dash away! dash away! dash away all!" As dry leaves that before the wild hurricane fly, When they meet with an obstacle, mount to the sky; So up to the house-top the coursers they flew, With the sleigh full of Toys, and St. Nicholas too. And then, in a twinkling, I heard on the roof, The prancing and pawing of each little hoof.